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Voice source-group command

I am trying to use the voice source-group command to restrict the incoming calls to my gateway. The AS5400 gateway rejects calls as long as there is match in the ACL whether it is permit or reject.

How do I use this feature to accept calls from known IPs in ACL ?

My IOS is 12.3.11T3

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

Re: Voice source-group command

Use the voice source-group command to assign a name to a set of source IP group characteristics. The terminating gateway uses these characteristics to identify and translate the incoming VoIP call.

Carrier IDs and trunk group labels must not have the same names.

Do not mix carrier IDs and trunk group labels within a source IP group.

A terminating gateway can be configured with carrier ID source IP groups and trunk-group-label source IP groups. The name of the source IP group must be unique to the gateway.

An access list defines a range of IP addresses for incoming calls that require additional scrutiny. Two related commands are used for voice source groups:

Use the access-list access-list-number {deny | permit} source [source-wildcard] [log] command in global configuration mode to define the contents of the access list.

Use the access-list access-list-number command in voice source-group configuration mode to assign the defined access list to the voice source group.

The terminating gateway uses the source IP group to identify the source of the incoming VoIP call before selecting an inbound dial peer. If the source is found in the access list, then the call is accepted or rejected, depending on how the access list is defined.

The terminating gateway uses the access list to implement call blocking. If the call is rejected, the terminating gateway returns a disconnect cause to the source. Use the disconnect-cause command to specify a disconnect cause to use for rejected calls.

Use the show access-lists EXEC command to display the contents of all access lists.

Use the show ip access-list EXEC command to display the contents of one access list.

Examples

The following example assigns access list 1 to voice source-group alpha. Access list 1 was defined previously using another command. An incoming source IP group call is checked against the conditions defined for access list 1 and is processed based on the permit or deny conditions of the access list.

Router(config)# voice source-group alpha

Router(cfg-source-grp)# access-list 1

1 REPLY
Silver

Re: Voice source-group command

Use the voice source-group command to assign a name to a set of source IP group characteristics. The terminating gateway uses these characteristics to identify and translate the incoming VoIP call.

Carrier IDs and trunk group labels must not have the same names.

Do not mix carrier IDs and trunk group labels within a source IP group.

A terminating gateway can be configured with carrier ID source IP groups and trunk-group-label source IP groups. The name of the source IP group must be unique to the gateway.

An access list defines a range of IP addresses for incoming calls that require additional scrutiny. Two related commands are used for voice source groups:

Use the access-list access-list-number {deny | permit} source [source-wildcard] [log] command in global configuration mode to define the contents of the access list.

Use the access-list access-list-number command in voice source-group configuration mode to assign the defined access list to the voice source group.

The terminating gateway uses the source IP group to identify the source of the incoming VoIP call before selecting an inbound dial peer. If the source is found in the access list, then the call is accepted or rejected, depending on how the access list is defined.

The terminating gateway uses the access list to implement call blocking. If the call is rejected, the terminating gateway returns a disconnect cause to the source. Use the disconnect-cause command to specify a disconnect cause to use for rejected calls.

Use the show access-lists EXEC command to display the contents of all access lists.

Use the show ip access-list EXEC command to display the contents of one access list.

Examples

The following example assigns access list 1 to voice source-group alpha. Access list 1 was defined previously using another command. An incoming source IP group call is checked against the conditions defined for access list 1 and is processed based on the permit or deny conditions of the access list.

Router(config)# voice source-group alpha

Router(cfg-source-grp)# access-list 1

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