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Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter 4 Configuring VISM Features
Configuring VISM Features
• 2 = G.711u and G.711a codecs, and clear channel
Note The cnfcodectmpl command is included in the “Allocating Resources” section on page 4-9
but is included here for your convenience.
• 3 = G.711u, G.711a, G.726-16k, G.726-24k, G.726-32k, G.726-40k, G.729a, and G.729ab codecs,
clear channel, and T.38 fax transfer
• 4 = G.711u, G.711a, G. 726-16k, G.726-24k, G.726-32k, G.726-40k, G.729a, G.729ab, G.723.1-H,
G.723.1a-H, G.723.1-L, G.723.1a-L codecs and clear channel
Step 2 Type the cnfcodecparams command, codec-type, codec-pkt-period, |preference, codec-string, and
iana-type| argument values, and press Enter to specify various codec parameters for use in the VoIP
operating mode.
The packetization period is defined in three separate commands depending upon the ATM method used:
• Use the cnfcodecparams command for VoIP switching applications. Complete this step.
• Use the addcid command for AAL2 trunking applications. See the “Configuring AAL2 Trunking
Operating Mode Parameters” section on page 4-36.
• Use the addrtpcon command for AAL2 trunking applications.
• Use the cnfprofelemvoice command for switched AAL2 PVC applications. See the “Configuring
Switched AAL2 PVC Operating Mode Parameters” section on page 4-38.
Specify the arguments with the following values:
• codec-type: In the range from 1 to 14.
• codec-pkt-period:
–
10
–
20
–
30
–
40
–
60
• preference:
–
0 = Ignore preference
–
In the range from 1 (highest) to 13 (lowest).
• codec-string: In the range from 1 to 20 ASCII characters.
• iana-type (IANA registered codec type): In the range from 0 to 96.
Step 3 Type the cnfcodecneg command, the codec-priority argument value, and press Enter to specify a codec
preference order when there are several codec lists—from the call agent local connection option (LCO)
list, local MIB, or a list received from the remote gateway in the session description protocol (SDP) data.
Specify the codec-priority argument value with one of the following:
• 1 = LCO list, remote SDP data list, local MIB
• 2 = LCO list, local MIB, remote SDP data list
• 3 = Remote SDP data list, LCO list, local MIB
• 4 = Remote SDP data list, local MIB, LCO list