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set (router) voip rtpmap
Use the set (router) voip rtpmap command to specify the dynamic payload type and name
to be used for a specific algorithm in the Session Description Protocol (SDP) part of MGCP
connection commands. This command takes effect immediately.
The defaults are:
Algorithm
G.726-16 kb/s
G.726-24 kb/s
G.726-40 kb/s
G.729A
NOTE: In accordance with current IANA assignments (www.iana.org, RTP
section), G.726-32 kb/s is assigned a (non-dynamic) payload type of 2, G.711 mu-
law is assigned payload type 0, and G.711 A-law is assigned payload type 8. (One
may also assign a dynamic payload type to G.726-32 by means of the above
command, in case there is a conflict with the use of payload type 2, which was
formerly assigned to G.721, in RFC 1890.) Only one payload type and DSP name
may be assigned per algorithm.
NOTE: The G.729 feature is protected by a software key. Until an appropriate key
is entered to enable this feature is will not be usable. The command, however, will
still succeed to allow for pre-configuration. For additional information on how to
purchase this feature, contact Customer Service.
Syntax:
Example:
{cmg_card-addr}
The slot number (1-6) that contains the CMG card.
{algorithm}
Enter one of g711mu, g711a, g726_16, g726_24, g726_32, g726_40, g729a
{type}
RTP dynamic payload type, 96 - 127.
{"name"}
Identifier up to 16 characters, enclosed in quotes.
Compact T1 - Release 6.1
Payload Type
96
97
98
18
set {cmg_card-addr} voip rtpmap {algorithm} {type}
{"name"}
set 3 voip rtpmap g726_16 96 "G.726-16"
The example will specify the payload type 96 to refer to G.726-16 kb/s with SDP
name G.26-16.
CLI Commands
SDP Name
G726-16
G726-24
G726-40
G729A
5-151
set
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