The Remote Media Gateway Model object is a child of the Remote Media Gateway Models object. It allows you to configure standard parameter settings that are used by one or more Subscriber Gateways, Registered SIP Bindings, Configured SIP Bindings or Trunk / Access Gateways.
If the NE is to support SIP access, you need to do one or more of the following.
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Any Remote Media Gateway Model with a name that begins MetaSwitchMediaGateway is for use by MetaSwitch Trunk / Access Gateways. Only a MetaSwitch support engineer can create or delete these models. |
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You cannot delete or disable a Remote Media Gateway Model if one or more active Subscriber Gateways, Configured SIP Bindings, or Trunk / Access Gateways refer to it. You need to disable all of these objects before you can disable the Remote Media Gateway Model. |
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You cannot delete or disable a Remote Media Gateway Model if one or more active Registered SIP Bindings refer to it. You need to disable the Registered SIP Binding, or configure the subscriber to use a different model, before you can disable the Remote Media Gateway Model.
If you need to delete a Remote Media Gateway Model that is in use by one or more Registered SIP Bindings, first disable the subscribers (Individual Lines or Business Group Lines) associated with these Registered SIP Bindings. Alternatively, configure the subscribers to use a different Remote Media Gateway Model and wait for any current calls to end so that the change is fully committed; you can verify this by checking the Remote Media Gateway Model shown in the Registered SIP Binding for each subscriber, which changes to the new value only when all calls using the old model have finished.
If an existing Remote Media Gateway Model is in use by a Registered SIP Binding because its name was matched against the user agent information, and you have defined a new Remote Media Gateway Model with a name that is a better match for the user agent information, do one of the following:
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Parameter |
Access |
Description |
Category | Create | Specifies the type of gateway to which this model applies. Values:
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Model index | Read only | The EMS's identifier for this Remote Media Gateway Model. This is used to identify the object when using the EMS's configuration export / import function. |
Model name | Change | A text string used in the EMS System Explorer to identify this Remote Media Gateway Model. Specify a string of up to 64 characters, which must not match the name of any other Remote Media Gateway Model. Names beginning with MetaSwitchMediaGateway are reserved for use by MetaSwitch Trunk / Access Gateways; you cannot create a model with a name beginning with this string. On an NE earlier than V4.2, this field is Change Inactive; you must disable the Remote Media Gateway Model before you can change it. |
Description | Change | An optional text description of this Remote Media Gateway Model. Specify a string of up to 64 characters, which must not match the description of any other Remote Media Gateway Model. |
Control protocol | Change Inactive / Read only | The control protocol used to communicate between the Call Agent and Media Gateways.
If Category is set to Subscriber or Trunk / Access, select one of the following values:
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Control protocol variant | Change / Read only | The variant of the control protocol used to communicate between the Call Agent and Media Gateways. This field is not visible if Category is set to SIP.
If Control protocol is set to MGCP, select one of the following values:
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Authentication | Change Inactive | This field appears only if Control protocol is set to MGCP. Specifies whether the Subscriber Gateway's communications with the NE require authentication using HTTP Digest Security as defined in RFC2617. Values:
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Default model | Change Inactive | Specifies whether this Remote Media Gateway Model is the default model (which will be used for dynamically-created Media Gateways if a more appropriate model cannot be determined).
This parameter applies only if Category is set to SIP. You cannot set this parameter to True on more than one Remote Media Gateway Model. Values:
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Alert-Info strings for Distinctive Ringing - normal ringing | Change Inactive | This field appears only if Category is set to SIP. The Alert-Info header string, if any, sent to the SIP device to indicate that a call should be announced using normal ring tone. Specify a string of maximum 128 ASCII characters. To indicate that no Alert-Info header is required, leave this field blank. |
Alert-Info strings for Distinctive Ringing - distinctive ringing 2 (Intra-Business Group calling) | Change Inactive | This field appears only if Category is set to SIP. The Alert-Info header string, if any, sent to the SIP device to indicate that a call should be announced using the Distinctive Ringing 2 ring tone. This tone is normally used to distinguish between external and internal calls in a Business Group. Specify a string of maximum 128 ASCII characters. To indicate that no Alert-Info header is required, leave this field blank. |
Alert-Info strings for Distinctive Ringing - distinctive ringing 3 (Automatic Recall/Callback) | Change Inactive | This field appears only if Category is set to SIP. The Alert-Info header string, if any, sent to the SIP device to indicate that a call should be announced using the Distinctive Ringing 3 ring tone. This tone is normally used to indicate Automatic Recall or Automatic Callback calls. Specify a string of maximum 128 ASCII characters. To indicate that no Alert-Info header is required, leave this field blank. |
Alert-Info strings for Distinctive Ringing - distinctive ringing 4 (Priority Calling) | Change Inactive | This field appears only if Category is set to SIP. The Alert-Info header string, if any, sent to the SIP device to indicate that a call should be announced using the Distinctive Ringing 4 ring tone. This tone is normally used to indicate Priority Calling. Specify a string of maximum 128 ASCII characters. To indicate that no Alert-Info header is required, leave this field blank. |
Supported low-bandwidth media formats | Change Inactive | Low-bandwidth formats, if any, that Media Gateways using this model can use to communicate with other Media Gateways. A low-bandwidth format can be used only if both Media Gateways in a call support the same format, and is not used if the subscriber line is a fax-only line. Specify zero or more of the following values:
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Preferred low-bandwidth media formats | Change Inactive | Preferred low-bandwidth formats for Media Gateways using this model. Specify one or more of the following values, or none to indicate no preference:
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Packetization interval | Change Inactive | Preferred media packetization interval, in milliseconds, for Media Gateways using this model. If this field is set to zero, the partner Media Gateway's packetization interval will be used instead. When programming endpoints, or when the packetization intervals are zero on both Media Gateways, then a default value will be used instead. Some individual media formats do not use this field, or may impose constraints on its value. For example, TDM and MF trunks do not require a packetization interval; G.729 requires a multiple of 10ms. If you specify an invalid value for the format in use, the default value for that format will be used instead. |
Silence suppression allowed | Change | Specifies whether silence suppression is allowed for this Media Gateway.
If two Media Gateways are connecting a call and both are configured to allow silence suppression, the link between them will be silence suppressed.
Note that the Line Usage specified for a subscriber may indicate that a line is fax-only. If such a subscriber is already part of a call, silence suppression will not be used. Values:
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Supported connection types | Change Inactive | This field is not visible if Category is set to SIP. Specifies whether this Media Gateway supports Access Devices using analog connections, digital connections, or both. Select one or both of the following values. The default is analog only.
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Access Device analog port name prefix | Change Inactive | A text string that will be used as a prefix in generating port names for new Access Devices using analog connections to this Remote Media Gateway Model. This field is not visible if Category is set to SIP, and appears only if Supported connection types includes the value Analog. Specify a string of up to 12 characters. If you do not specify a prefix, MetaSwitch uses the standard string AALN. |
Access Device digital port name prefix | Change Inactive | A text string that will be used as a prefix in generating port names for new Access Devices using digital connections to this Remote Media Gateway Model. This field is not visible if Category is set to SIP, and appears only if Supported connection types includes the value Digital. Specify a string of up to 12 characters. If you do not specify a prefix, MetaSwitch uses the standard string ds/ds1. |
Maximum simultaneous transactions outstanding | Change Inactive | The maximum number of outstanding transactions between the MetaSwitch Call Agent and the remote Media Gateway. You should not need to modify this setting except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Specify a value in the range 10 - 1000. The default is 300 if Control protocol is MeGaCo H248, and 100 otherwise. |
Fix bits (MGCP, MeGaCo, SIP) | Change Inactive | A series of options that control the detailed behaviour of Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Dynamic fix bits (MGCP, MeGaCo, SIP) | Change | A series of options that control the detailed behaviour of Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Fix bits (MGCP, MeGaCo) | Change Inactive | This field appears only if Control protocol is set to MGCP or MeGaCo H248. A series of options that control the detailed behaviour of MGCP and MeGaCo Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Fix bits (MGCP) | Change Inactive | This field appears only if Control protocol is set to MGCP. A series of options that control the detailed behaviour of MGCP Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Dynamic fix bits (MGCP) | Change | This field appears only if Control protocol is set to MGCP. A series of options that control the detailed behaviour of MGCP Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Fix bits (MeGaCo) | Change Inactive | This field appears only if Control protocol is set to MeGaCo H248. A series of options that control the detailed behaviour of MeGaCo Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Fix bits (MeGaCo) 2 | Change Inactive | This field appears only if Control protocol is set to MeGaCo H248. Additional options that control the detailed behaviour of MeGaCo Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Fix bits (SIP) | Change Inactive | This field appears only if Category is set to SIP. A series of options that control the detailed behaviour of SIP Media Gateways. You should not need to modify these settings except during integration or interoperability testing with new Media Gateways, or as instructed by MetaSwitch support personnel. Select zero or more of the following values:
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Reference count | Read only | This field tracks the count of gateways that refer to this gateway model. If one or more gateways refer to this gateway model, it cannot be deleted or disabled. |
Export - number of objects exported | Read only | The total number of objects (including child objects) written to the export file so far in the current or most recent export operation. |
Export - status | Read only | The status of the current or most recent export operation, if any. Values:
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Export - file | Change | The name of the text file (in the EMS User's home directory on the EMS Server) to which configuration information for this object will be exported. The maximum length of the filename is 32 characters. |
Export - log correlator | Read only | If the export status is Failed, this field contains a correlator for the log message that contains details of the failure. Click on the 'go to log' button next to this field to jump to this message in the EMS log viewer window. |
Export - correlator metaswitch | Read only | If the export status is Failed, this field contains the name of the EMS Server or MetaSwitch Network Element that generated the failure log. You may need this information to find the log in the EMS log viewer window. |
Requested status | Read only | Specifies whether an administrator has attempted to enable the Remote Media Gateway Model. Values:
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Actual status | Read only | Specifies the current status of the Remote Media Gateway Model. Values:
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