DJH Reviewed:
SPOC 07/08/2011
Solution & Interoperability Test Lab Application Notes
©2011 Avaya Inc. All Rights Reserved.
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SM6-1_CMES
3.2. Configure Trunk-to-Trunk Transfers
Use the change system-parameters features command to enable trunk-to-trunk transfers. This
feature is needed when an incoming call to a SIP station is transferred to another SIP station. For
simplicity, the Trunk-to-Trunk Transfer field on Page 1 was set to “all” to enable all trunk-to-
trunk transfers on a system wide basis.
Note: Enabling this feature poses significant security risk by increasing the risk of toll fraud, and
must be used with caution. To minimize the risk, a COS could be defined to allow trunk-to-trunk
transfers for specific trunk group(s). For more information regarding how to configure
Communication Manager to minimize toll fraud, see Reference [10] in Section 9.
change system-parameters features Page 1 of 18
FEATURE-RELATED SYSTEM PARAMETERS
Self Station Display Enabled? n
Trunk-to-Trunk Transfer: all
Automatic Callback with Called Party Queuing? n
Automatic Callback - No Answer Timeout Interval (rings): 3
…
3.3. Configure IP Codec Set
Use the change ip-codec-set n command where n is the number used to identify the codec set.
Enter the following values:
Audio Codec: Enter “G.711MU” and “G.729” as supported types.
Silence Suppression: Retain the default value “n”.
Frames Per Pkt: Enter “2”.
Packet Size (ms): Enter “20”.
Media Encryption: Enter the value based on the system requirement.
For the sample configuration, “none” was used.
change ip-codec-set 2 Page 1 of 2
IP Codec Set
Codec Set: 2
Audio Silence Frames Packet
Codec Suppression Per Pkt Size(ms)
1: G.711MU n 2 20
2: G.729 n 2 20
3:
Media Encryption
1: none
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