Voice Class Codec Configurations

You can perform the voice class codec configuration, using the ios-voice:codec configuration mode under ios-voice:voice configuration mode. The ios-voice:codec configuration mode is a part of Cisco-IOS-XE-voice module. The following operations are allowed in the ios-voice:codec configuration mode.

Operations X-path
get, get-config, edit-config /native/ios-voice:voice/ios-voice:class/ios-voice:codec

Select VoIP Service Configuration Mode

To enter into the ios-voice:codec configuration mode, follow the x-path provided in the below table.

Object X-path
ios-voice:codec /native/ios-voice:dial-peer/ios-voice:voice/ios-voice:voice-class/ios-voice:codec

Configuration Recommendations

  • The voice class codec and codec preference can be configured as follows:

    • voice class codec <1-10000>
    • codec preference <1-24> g711ulaw
    • codec preference <1-24> g711alaw
    • codec preference <1-24> g729r8
    • codec preference <1-24> ilbc mode
    • codec preference <1-24> g722-64
    • codec preference <1-24> opus profile <1-1000000>
    • codec preference <1-24> scip

  • You cannot associate the same codec more than once within a codec class. For example, the following is not a supported configuration:

    • voice class codec 10
    • codec preference 1 g711ulaw
    • codec preference 20 g711ulaw

  • For the codecs g711ulaw, g711alaw and g722-64, you can specify the size of the voice frames as follows:

    • codec preference <1-24> g711ulaw [bytes {80,160,240}]

  • For the codec g729r8, you can specify the size of the voice frames as follows:

    • codec preference <1-24> g729r8 [bytes {10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240}]

  • For the iLBC codec, you can specify the mode and size of the voice frames as follows:

    • codec preference <1-24> ilbc mode [20 bytes {38, 76, 114, 152, 190, 228} | 30 bytes {50, 100, 150, 200}]

  • For the scip video codec, you can specify the codec type as follows:

    • video codec scip

The ios-voice:codec configuration mode allows you to perform the following codec configurations:

Codec configurations and X-path details

Object Description X-path Value Prerequisites Remarks
voice class codec To set codec global parameters. /native/ios-voice:dial-peer/ios-voice:voice/ios-voice:voice-class/ios-voice:codec/ios-voice:codectag codectag, value: 1 to 10000 N/A N/A
codec preference (value) (codec-type) To set priority order for using this codec. /native/ios-voice:voice/ios-voice:class/ios-voice:codec/ios-voice:codec/ios-voice:preference value: 1 to 24 N/A N/A

Examples: Voice Class Codec Configuration

Following are the examples for Voice Class Codec Configurations.

Example for get-config operation:

Request

Sending:

<nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:867dd34c-522e-43c5-84ac-47614eb3b2c7">
  <nc:get-config>
    <nc:source>
      <nc:running/>
    </nc:source>
    <nc:filter>
      <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
        <voice xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-voice">
          <class>
            <codec>
              <codec-tag>1</codec-tag>
              <codec>
                <preference>
                  <preference-tag>4</preference-tag>
                </preference>
                <preference>
                  <preference-tag>4</preference-tag>
                </preference>
              </codec>
            </codec>
          </class>
        </voice>
      </native>
    </nc:filter>
  </nc:get-config>
</nc:rpc>

##

Response

Received:
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:867dd34c-522e-43c5-84ac-47614eb3b2c7">
  <data>
    <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
      <voice xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-voice">
        <class>
          <codec>
            <codec-tag xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">1</codec-tag>
            <codec>
              <preference>
                <preference-tag xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">4</preference-tag>
                <codec-type>ilbc</codec-type>
              </preference>
              <preference>
                <preference-tag xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">4</preference-tag>
                <codec-type>ilbc</codec-type>
              </preference>
            </codec>
          </codec>
        </class>
      </voice>
    </native>
  </data>
</rpc-reply>

Example for edit-config operation:

Request

Sending:

<nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:e10e6a15-e091-4215-958a-d15aeac6ac64">
  <nc:edit-config>
    <nc:target>
      <nc:running/>
    </nc:target>
    <nc:config>
      <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
        <voice xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-voice">
          <class>
            <codec>
              <codec-tag>2</codec-tag>
              <codec>
                <preference>
                  <preference-tag>1</preference-tag>
                  <codec-type>g722-64</codec-type>
                  <bytes>80</bytes>
                </preference>
              </codec>
            </codec>
          </class>
        </voice>
      </native>
    </nc:config>
  </nc:edit-config>
</nc:rpc>

##

Response 

Received:
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:e10e6a15-e091-4215-958a-d15aeac6ac64">
  <ok/>
</rpc-reply>