Attribute Entry

Each Attribute Entry object is a child of an Attribute Set object.

Each object defines a single attribute (consisting of a type and a value) that may be added to the routing request during the number validation process.


Note that when the grandparent Config Set is active, this object cannot be modified; all fields are read only and all actions are disabled. You must deactivate the grandparent Config Set before you can modify the object.


Parameter

Access

Description
Attribute type Change Type of the attribute defined in this object. See the description of each Attribute value parameter below for more details of each attribute type. Values:
  • Allowed carrier call type (North America only)
  • Allowed dialing pattern (North America only)
  • ANI II digits (North America only)
  • ANI Screening lookup (North America only)
  • Announcement ID
  • Announcement Parameter 1
  • Announcement Parameter 2
  • Area code dialed
  • Authorization Code Service (North America only)
  • Billing - call type
  • Billing - structure code
  • Billing - override AIN billing (North America only)
  • Called address complete
  • Called address scope
  • Called address type
  • Call hold allowed
  • Calling category
  • Call type (North America only)
  • Carrier call type (North America only)
  • Carrier type (North America only)
  • Country code length
  • Customer announcement ID
  • Dialed prefix (North America only)
  • Dialing pattern (North America only)
  • Echo cancellation
  • FGD carrier ID (North America only)
  • FGD carrier dialing allowed (North America only)
  • FGD carrier requirement (North America only)
  • Force LNP lookup (North America only)
  • Force on-switch lookup
  • IN query ANI NPA (North America only)
  • IN query ANI NPA-NXX (North America only)
  • IN query ANI 1st preference (North America only)
  • IN query ANI 2nd preference (North America only)
  • IN query ANI 3rd preference (North America only)
  • IN trigger index (North America only)
  • IN US trigger match type (North America only)
  • ISUP called address prefix (North America only)
  • Maximum call duration
  • Message Billing Index
  • Number type for ANI lookup (North America only)
  • Operator call
  • Outgoing ISUP/ISDN Release Cause
  • Permit when service suspended
  • Priority call
  • Pseudo ANI egress signaling types (North America only)
  • Pseudo ANI presentation indicator (North America only)
  • Region code (North America only)
  • Release control mode (UK only)
  • Restricted line 950 call (North America only)
  • Routing control (UK only)
  • Signal access signaling for operator call (North America only)
  • Signaling FGD carrier ID (North America only)
  • Signaling Gateway
  • Test call
  • Transit Network ID (North America only)
  • UK call type (UK only)
  • Use modified operator NOA encoding (North America only)
  • Use operator requested NOA encoding (North America only)
  • Use Pseudo ANI (pANI) (North America only)
  • User Defined Attribute 1 - User Defined Attribute 20
    Each of the 20 User Defined Attribute options appears in this list only if you have configured a User Defined Attribute object with the corresponding numeric index value. It appears as UDA n - description (showing the index value in the range 1-20 and the configured description, if any).
  • User defined MF call type (North America only)
  • US LATA (North America only)
Attribute value - allowed carrier call type Change This attribute is not valid in the UK.
Attribute value - allowed dialing pattern Change This attribute is not valid in the UK.
Attribute value - ANI II digits Change This attribute is not valid in the UK.
Attribute value - ANI Screening lookup type Change This field appears only if Attribute type is set to ANI Screening lookup. This field is valid only in the US.
Attribute value - ANI Screening lookup table Change This field appears only if Attribute value - ANI Screening lookup type is visible and set to Lookup in specific table. This field is valid only in the US.
Attribute value - announcement ID Change This field appears only if Attribute type is set to Announcement ID. The announcement ID is optional, and can be set on failure of routing or number validation to request playing of a specific announcement. You cannot set both an Announcement ID and a Customer Announcement ID in the same attribute set. If no announcement ID is specified, and the call cannot be released immediately, the default announcement associated with the error code will be played. After the announcement has been played, the caller will get dial tone or reorder based on the value of the Line treatment after call disconnect field on the Line Signaling object. Values:
  • None (default)
    No announcement is played and the caller immediately gets the treatment defined by the Line treatment after call disconnect field on the Line Signaling object.
  • Bad area code
  • Missing area code
  • Unnecessary area code
  • Unnecessary prefix
  • Number disconnected
  • Individual number changed
  • Bad CAC combination
  • Changed CAC
  • Wrong CAC
  • No intraLATA CAC
  • Bad CAC
  • No domestic CAC
  • No international CAC
  • Restricted CAC
  • Prohibited CAC
  • Prefix required
  • Group number changed
  • Media in use
  • Test tone
Depending on the Announcement ID value, you may need to set up additional Attribute Entry objects for parameters required by the announcement. See Announcement Parameters at the end of this section for more information.
Attribute value - announcement parameter 1 Change This field appears only if Attribute type is set to Announcement Parameter 1. Numeric string for the first parameter to be included in the error announcement. This attribute is valid only in an Attribute Set that includes the Announcement ID or Customer Announcement ID attribute. Specify a string of up to 32 digits. Only ASCII digits 0 - 9 are valid.
Attribute value - announcement parameter 2 Change This field appears only if Attribute type is set to Announcement Parameter 2. Numeric string for the second parameter to be included in the error announcement. This attribute is valid only in an Attribute Set that includes the Announcement ID or Customer Announcement ID attribute. Specify a string of up to 32 digits. Only ASCII digits 0 - 9 are valid.
Attribute value - area code dialed Change This field appears only if Attribute type is set to Area code dialed. Attribute used at an originating exchange to indicate whether the calling subscriber dialed an area code as part of the called number. This is subsequently used by billing. Values:
  • Unknown (default)
  • Not applicable
  • Not dialed
  • Dialed
Attribute value - Authorization Code Operation Change This field appears only if Attribute type is set to Authorization Code Service. This field is valid only in the US.
Attribute value - Authorization Code Table Change This field appears only if Attribute value - Authorization Code Operation is visible and set to On-Switch Calling Card / Hotline. This field is valid only in the US.
Attribute value - Valid Authorization Codes Change This field appears only if Attribute value - Authorization Code Operation is visible and set to On-Switch Calling Card / Hotline. This field is valid only in the US.
Attribute value - Authorization Code Change This field appears only if Attribute value - Valid Authorization Codes is visible and set to Specific code. This field is valid only in the US.
Attribute value - Authorization Code Prefix Change This field appears only if Attribute type is set to Authorization Code Service. This field is valid only in the US.
Attribute value - billing - call type Change This field appears only if Attribute type is set to Billing - call type. If you need to override the call type in the first billing record for this call, set this attribute in Number Validation to specify the call type to be used. Values:
  • 1
  • 5
  • 6
  • 9
  • 33
  • 45
  • 47
  • 88
  • 110
  • 119
  • 131
  • 132
  • 134
  • 141
  • 142
  • 710
  • 711
  • 720
  • 721
  • 800 - 999
    This range of values is reserved for your own custom billing records; you can use any value in this range.
See Call Type / Structure Code Combinations at the end of this section for the valid combinations of call type and structure code. If the call would not normally generate any billing records, a billing record is created only if you specify both the structure code and the call type. Otherwise the selected call type replaces the call type in the first billing record for the call.
Attribute value - billing - override AIN billing Change This field appears only if Attribute type is set to Billing - override AIN billing. This field is valid only in the US.
Attribute value - billing - structure code Change This field appears only if Attribute type is set to Billing - structure code. If you need to override the structure code in the first billing record for this call, specify the structure code to be used. Values:
  • 1
  • 20
  • 28
  • 79
  • 220
  • 221
  • 360
  • 364
  • 500
  • 625
  • 653
See Call Type / Structure Code Combinations at the end of this section for the valid combinations of call type and structure code. If the call would not normally generate any billing records, a billing record is created only if you specify both the structure code and the call type. Otherwise the selected structure code replaces the structure code in the first billing record for the call.
Attribute value - called address complete Read only This field appears only if Attribute type is set to Called address complete. In this case, the only valid value is Yes, so this is a read-only field and you cannot specify a value. For calls originating on the switch, line signaling sets the Called address complete attribute to Yes if a digit map match cannot be found or occurred only on timer expiry. Number validation sets the Called address complete attribute to Yes if it knows a number is complete (which is normally always the case unless overlap addressing is being used).
Attribute value - called address scope Change This field appears only if Attribute type is set to Called address scope. Area within which the called address is unique.
  • For dialed digit addresses, the address scope is unknown on input and must be converted to a different value before successful completion of number validation.
  • For E.164 addresses, the scope is not normally changed during number validation except in the case where number validation adds an area code to the number when the address scope may be updated to reflect this.
Values:
  • Unknown (default)
  • International
  • National
  • Subscriber
  • No number
  • UK specific
Attribute value - called address type Change This field appears only if Attribute type is set to Called address type. Address type of the called address. Number validation uses this to determine which number validation table to use initially, and normally converts "dialed digits" addresses into E164 addresses. Values:
  • E.164 (default)
  • Dialed digits
Attribute value - call hold allowed Change This field appears only if Attribute type is set to Call hold allowed. Indicates whether holding this call is allowed. At a call originating exchange, call holding is normally allowed, but may be disallowed during number validation processing (typically when the call is routed to a carrier with whom there is no agreement to support call hold for operator calls). Values:
  • No (default)
  • Yes
Attribute value - calling category Change This field appears only if Attribute type is set to Calling category. The category of call being placed by the calling party. The output value of this attribute is used in the Calling Party Category field in an ISUP IAM. Values:
  • Normal (default)
  • Emergency
Attribute value - call type Change This attribute is not valid in the UK.
Attribute value - carrier call type Change This attribute is not valid in the UK.
Attribute value - carrier type Change This attribute is not valid in the UK.
Attribute value - country code length Change This field appears only if Attribute type is set to Country code length. Length of the country code for an international call. It may be used by signaling stacks in order to extract the country code prefix from the called number. This attribute is used only at an originating exchange. Non-zero values are used only for international calls. Range: 0 - 3. The default is 0.
Attribute value - customer announcement ID Change This field appears only if Attribute type is set to Customer announcement ID. Identifies a customer-specific announcement that is to be played to the subscriber on Number Validation failure. You cannot set both a Customer Announcement ID and an Announcement ID in the same attribute set. You will need to set up an entry in the customer-specific message catalog to include the appropriate announcement; see the Integration and Customization Manual for more information about customizing announcements. Set this field to specify the message number for the appropriate announcement in the customized message catalog file. Each customer announcement may take up to two parameters, as specified by Announcement Parameter 1 and Announcement Parameter 2. If no Announcement ID or Customer Announcement ID is specified, and the call cannot be released immediately, the default announcement associated with the error code is played.
Attribute value - dialed prefix Change This attribute is not valid in the UK.
Attribute value - dialing pattern Change This attribute is not valid in the UK.
Attribute value - echo cancellation Change This field is visible only if Attribute type is set to Echo cancellation.

Echo cancellation requirements for this call. This is normally configured in number validation, determined by analysis of the called address. For example, international calls often meet sufficient delay to require echo cancellation.

Echo cancellation can also be set up for each media channel in ISUP Signaling. This is normally required if the media channel is known to have a long delay, for example if it represents a satellite link. Values:
  • Required (default)
  • Preferred
Attribute value - FGD carrier dialing allowed Change This attribute is not valid in the UK.
Attribute value - FGD carrier ID Change This attribute is not valid in the UK.
Attribute value - FGD carrier requirement Change This attribute is not valid in the UK.
Attribute value - force LNP lookup Change This field appears only if Attribute type is set to Force LNP lookup. This field is valid only in the US.
Attribute value - force on-switch lookup Change This field appears only if Attribute type is set to Force on-switch lookup. Specifies whether the NE should always look up the called address in the database of subscribers on this switch, and allow routing to the associated subscriber if found. This overrides the default behavior for some calls, avoiding the use of a long-distance carrier when both subscribers are on the same NE. For example, if a call is classed as an InterLATA or IntraLATA call it would normally be routed to an IXC even if the calling and called parties are co-located on the same switch. Forcing on-switch lookup suppresses billing records for the call; if you want to ensure that these records are created, set the Billing - call type and Billing - structure code attributes in the same Attribute Set. Typical call type / structure code combinations are 6 / 1 for intraLATA calls and 110 / 625 for intraLATA calls; see Call Type / Structure Code Combinations at the end of this section for the valid combinations of call type and structure code. Note that setting this attribute is against equal access regulations in some circumstances, but in others, notably in VoIP networks, the regulations are more relaxed. Values:
  • Yes
  • No
Attribute value - IN query ANI 1st preference Change This field appears only if Attribute type is set to IN query ANI 1st preference. This field is valid only in the US.
Attribute value - IN query ANI 2nd preference Change This field appears only if Attribute type is set to IN query ANI 2nd preference. This field is valid only in the US.
Attribute value - IN query ANI 3rd preference Change This field appears only if Attribute type is set to IN query ANI 3rd preference. This field is valid only in the US.
Attribute value - IN query ANI NPA Change This field is valid only in the US.
Attribute value - IN query ANI NPA-NXX Change This field is valid only in the US.
Attribute value - ISUP called address prefix Change This field appears only if Attribute type is set to ISUP called address prefix; it is used only for long-distance calls in Canada that are routed over ISUP trunks, and is not required for deployments elsewhere.
Attribute value - maximum call duration Change This field appears only if Attribute type is set to Maximum call duration.

Maximum permitted duration for a call. If this attribute (MCD) is set, the call will be terminated if it is still in progress when the specified limit is reached. This is typically used to prevent excessive call charges arising from calls to expensive destinations (for example long-distance or international calls).

The MCD attribute can be set in either Number Validation or Routing, and the duration is measured from the time when Number Validation or Routing completes with the MCD attribute set. This means that, if the specified duration is too short, the call may be terminated before it has been answered or before an announcement being played to it has completed.

A multi-party call can have the MCD attribute set on some branches of the call but not on others. If all MCD-controlled branches of the call end before the specified duration is reached, any remaining call branches are not affected by the MCD. However, if the MCD is reached on one branch of the call, all branches of the call are terminated at the same time, including those that do not have an MCD set.

The MCD attribute is ignored if any part of the call is identified as an emergency call; these calls will not be terminated when the MCD expires. Specify the duration in minutes, in the range 1 - 1440 (1 minute - 24 hours), or specify zero to indicate no limit.
Attribute value - message billing index Change This field appears only if Attribute type is set to Message Billing Index. Message Billing Index associated with the call. If this index is included, a billing record containing the MBI is recorded in billing files. Enter the index as 3 decimal digits.
Attribute value - number type for ANI lookup Change This field appears only if Attribute type is set to Number type for ANI lookup. This field is valid only in the US.
Attribute value - operator call Change This field appears only if Attribute type is set to Operator call. Indicates whether some kind of operator involvement is required for this call. This is set by the number validation component at an originating exchange for direct calls to an operator, calls which require operator involvement and operator services calls. Currently this indicator is ignored at a non-originating exchange. Values:
  • No (default)
  • Yes
Attribute value - outgoing ISUP/ISDN release cause Change This field appears only if Attribute type is set to Outgoing ISUP/ISDN Release Cause. Indicates whether a specific release cause is to be reported to the originating switch if the call could not be routed on this switch, or if it was routed to another switch and was rejected there. The release cause will be reported only if the call was received over an ISUP trunk. Note that setting a release cause does not in itself cause the call to be rejected. The valid values for this attribute are a subset of those defined in Q.850; the other values defined in Q.850 are not supported, generally because they do not apply to ISUP trunks. See Outgoing Release Causes at the end of this section for a full list of values and some restrictions on their use. Alternatively, you can specify Auto (the default) to indicate that the NE should use the release cause that it determined, or the release cause signaled by the terminating switch if the call was routed to another switch and was rejected there.
Attribute value - permit when service suspended Change This field appears only if Attribute type is set to Permit when service suspended. Specifies whether the NE should allow calls to this number even when the subscriber's telephone service is suspended. In general, a suspended subscriber can make calls to the emergency service number 999 and to one other number defined in the General Call Service Controls object. If you need to allow access to other numbers, set this attribute during number validation on all numbers for which access is required. Values:
  • Yes
  • No
Attribute value - priority call Change This field appears only if Attribute type is set to Priority call. Indicates whether the call requires priority handling. At an originating exchange, this defaults to No but can be set by number validation processing if required. Whether or not a call is a priority call may affect how it is routed. Values:
  • No (default)
  • Yes
Attribute value - pseudo ANI egress signaling types Change This field appears only if Attribute type is set to Pseudo ANI egress signaling types. This field is valid only in the US.
Attribute value - pseudo ANI presentation indicator Change This field appears only if Attribute type is set to Pseudo ANI presentation indicator. This field is valid only in the US.
Attribute value - region code Change This attribute is not valid in the UK.
Attribute value - release control mode Change This field appears only if Attribute type is set to Release control mode. Specifies the release controlling party for a call at the originating and terminating exchanges. This may be overridden by operator hold functionality. Currently, this attribute is used only at UK call originating exchanges. Values:
  • Calling party (default)
  • Called party
  • Last party
Attribute value - restricted line 950 call Change This attribute is not valid in the UK.
Attribute value - routing control Change This field appears only if Attribute type is set to Routing control. Indicates how routing retries should be controlled at different levels in the UK network. It is a routing input and output attribute and plays no role in number validation. Values:
  • Alternate routing allowed, continuous routing allowed (default)
  • Alternate routing barred, continuous routing allowed
  • Alternate routing allowed, continuous routing barred
  • Alternate routing barred, continuous routing barred
  • Alternate routing allowed once, continuous routing allowed
  • Alternate routing allowed once, continuous routing barred
Attribute value - signal access signaling for operator call Change This attribute is not valid in the UK.
Attribute value - signal FGD carrier ID Change This attribute is not valid in the UK.
Attribute value - Signaling Gateway Change This field appears only if Attribute type is set to Signaling Gateway. Specifies the Signaling Gateway associated with this call. Select from the displayed list of configured Signaling Gateways.
Attribute value - test call Change This field appears only if Attribute type is set to Test call. Indicates whether the call is a test call. This is set by number validation based on the dialed number, and may be used in routing the call. Values:
  • No (default)
  • Yes
Attribute value - Transit Network ID Change This attribute is not valid in the UK.
Attribute value - UK call type Change This field appears only if Attribute type is set to UK call type. Type of the call being established. This is set by the number validation component at the call originating exchange to indicate the type of the call, and is used for Billing and Call Barring. Values:
  • Unknown (default)
  • Broadband
    Reserved for use by broadband services 092 - 099.
  • Corporate, toll-free
    Corporate toll-free number (typically starting 0500).
  • Corporate
    Corporate number (typically starting 05, except for 0500).
  • Directory enquiries
    Call to directory enquiries (for example 192, 195, or 153).
  • Emergency
    Emergency call (for example 999). If this value is set, the call will be retried continuously until it is connected successfully or until the caller hangs up.
  • International
    International call dialed from the UK.
  • Local
    Local call.
  • Local, non-geographical
    Non-geographic number charged at or below local rates. Typically used for numbers starting with 084, except for a few numbers in the 084 range that are toll-free (for example, unmetered internet access).
  • Mobile
    Mobile phone number (typically starting with 077, 078, or 079).
  • National
    National geographic number.
  • National, non-geographical
    National non-geographic number. Typically used for numbers starting with 087, except for a few numbers in the 087 range that are toll-free (for example, unmetered internet access).
  • Operator
    Operator call (for example 100 or 155).
  • Other carrier
    Access codes for other carriers.
  • Paging
    Paging services number (typically starting with 076).
  • Personal numbering
    "Find-me-anywhere" personal number (typically starting with 070).
  • Premium
    Premium rate number (typically starting with 090 or 091).
  • Repair
    Repair service (for example 151 or 154).
  • Toll-free
    Toll-free number (typically starting 0800).
  • Other
    Any number that does not match one of the categories above.
The default value Unknown can be used as a placeholder value during number validation, but should be replaced by a more specific value before number validation completes. The call will not be routed if this attribute value is set when number validation completes.
Attribute value - use modified operator NOA encoding Change This attribute is not valid in the UK.
Attribute value - use operator requested NOA encoding Change This attribute is not valid in the UK.
Attribute value - Use Pseudo ANI (pANI) Change This field appears only if Attribute type is set to Use Pseudo ANI (pANI). This field is valid only in the US.
Attribute value - user defined Change This field appears only if Attribute type is set to one of the User Defined Attribute values (UDA 1 - UDA 20) or to User defined MF call type.

Specifies a user-defined numeric value that should be added to this routing request for use later in the routing process.

User Defined Attributes are provided as an extension to allow you to perform routing that is specific to your deployment and cannot be controlled by other attributes; many deployments may not require them. They are configured using the User Defined Attribute objects.

The MetaSwitch Class 4/5 Softswitch does not assign a specific meaning to any particular User Defined Attribute or its value; you can use any of these attributes and assign values as required. For each attribute, you can specify an optional name to identify the attribute's meaning.

In Number Validation, you can specify a User Defined attribute as an integer value; you can then match on one or more of these values later in Number Validation or during Routing to determine how to route the call.
Requested status Read only Specifies whether an administrator has attempted to enable the Attribute Entry. Values:
  • Enabled
    The object has been enabled.
  • Disabled
    The object has not been enabled or has been disabled.
Actual status Read only Specifies the current status of the Attribute Entry. Values:
  • Enabled
    The object has been enabled.
  • Disabled
    The object has not been enabled or has been disabled.

Announcement Parameters

Some announcements played to subscribers require one or more parameters that are inserted into the announcement; for example, an announcement informing the subscriber of an area code change requires a parameter specifying the new area code. Other announcements require no parameters (for example a "number disconnected" announcement). For more information about how parameters are included in announcements, see the Integration and Customization Manual.

If you have set up an Attribute Entry with Attribute type set to Announcement ID, and the specific announcement ID you have selected requires one or two parameters, any Attribute Set that includes this Attribute Entry must also include one or two additional Attribute Entries for these parameters. In these entries, Attribute type must be set to Announcement parameter 1 for the first parameter, and Announcement parameter 2 for the second.

In the delivered system, the announcement IDs requiring parameters are as follows. Note that the requirement for parameters with specific announcement IDs may be different if you have customized the announcements as described in the Integration and Customization Manual.

No announcement parameters:
  • Number disconnected
  • Individual number changed
  • Bad CAC combination
  • No intraLATA CAC
  • Bad CAC
  • No domestic CAC
  • No international CAC
  • Restricted CAC
  • Media in use
  • Test tone
  • Prohibited CAC
One announcement parameter:
  • Bad area code
  • Missing area code
  • Unnecessary area code
  • Unnecessary prefix
  • Changed CAC
  • Wrong CAC
  • Prefix required
Two announcement parameters:
  • Group number changed

Call Type / Structure Code Combinations

The parameters Attribute value - billing - call type and Attribute value - billing - structure code allow you to override the contents of the billing records generated by the MetaSwitch NE. You are recommended to use combinations of call type and structure code shown in the list below; the MetaSwitch NE supports other combinations of the valid values, but these do not correspond to standard billing records and you will need to ensure that your billing systems can deal with them.

For more information about the format of billing records that the MetaSwitch NE generates, see Operations Manual: Billing.


Call type


Description


Supported structure codes
1 Detailed Message Rate, with MBI 20
5 Detailed Message Rate, no MBI 1, 220, 500
6 Station paid (InterLATA) 1, 500
9 411 DA 28
33 555 DA 28
45 ISDN User Service 0001, 0220, 0221, 0500
47 Default AIN 221
88 555 non-DA 1, 500
110 InterLATA Station Paid 625
119 Terminating Access Record 625, 653
131 FGA - Originating 79
132 FGA - Terminating 1, 500
134 FGB - Originating 625
141 Interexchange Carrier Number Services 360
142 Local Exchange Carrier Number Services 364
710 Originating Toll AMA Recording 625
711 Terminating Toll AMA Recording 625
720 Connecting Network Access Incoming 625
721 Default LNP 1, 500
800 - 999 LEC defined Any

Outgoing Release Causes

When an incoming call attempt received over an ISUP trunk is to be rejected because it cannot be routed, you can specify a release cause as an attribute to be signaled to the originating switch, which may help that switch to determine how to re-route the call.

The MetaSwitch NE supports the release cause values listed below, which are defined in the Q.850 specification. However, you should note the following restrictions.


Value


Description


ISUP
mapping


Extra
info?

1 Unallocated number Unchanged Yes
2 No route to specified transit network (national use) Unchanged Yes
3 No route to destination Unchanged Yes
4 Send special info tone Unchanged No
5 Misdialed trunk prefix Unchanged No
6 Channel unacceptable 31 No
7 Call awarded to established channel 31 No
8 Call pre-empted Unchanged No
9 Call pre-empted, circuit reserved Unchanged No
16 Normal call clearing Unchanged Yes
17 User busy Unchanged Yes
18 User not responding Unchanged No
19 User not answering Unchanged No
20 Subscriber absent Unchanged No
21 Call rejected Unchanged Yes
22 Number changed Unchanged Yes
27 Destination out of order Unchanged No
28 Invalid number format Unchanged No
29 Facilities rejected Unchanged Yes
30 Response to status inquiry 31 No
31 Normal, unspecified Unchanged No
34 No circuit / channel available Unchanged No
38 Network out of order Unchanged No
41 Temporary failure Unchanged No
42 Switching equipment congestion Unchanged No
43 Access information discarded Unchanged Yes
44 Requested circuit / channel not available Unchanged No
46 Precedence call blocked Unchanged No
47 Resource unavailable, unspecified Unchanged No
50 Requested facility not subscribed Unchanged Yes
53 Outgoing calls barred within CUG Unchanged No
55 Incoming calls barred within CUG Unchanged No
57 Bearer capability not authorized Unchanged Yes
58 Bearer capability not presently available Unchanged Yes
62 Inconsistency in outgoing information element Unchanged No
63 Service or option not available, unspecified Unchanged No
65 Bearer capability not implemented 79 Yes
66 Channel type not implemented 79 Yes
69 Requested facility not implemented Unchanged Yes
70 Only restricted digital information bearer capability is available (national use) Unchanged No
79 Service option not implemented, unspecified Unchanged No
87 User is not a member of CUG Unchanged No
88 Incompatible destination Unchanged No
90 Non existent CUG Unchanged No
91 Invalid transit network selection (national use) Unchanged No
95 Invalid message, unspecified Unchanged No
97 Message type non-existent or not implemented Unchanged Yes
98 Message not compatible with call state Unchanged Yes
99 Information element / parameter non-existent or not implemented 111 No
102 Recovery on timer expiry Unchanged Yes
103 Parameter non-existent or not implemented - passed on (national use) Unchanged Yes
110 Unrecognized parameter discarded Unchanged Yes
111 Protocol error, unspecified Unchanged No
127 Interworking, unspecified Unchanged No