[SIPForum-discussion] Question About media attribute within SDP

[Shakil, Rashid]

Hello All,

For outbound calls the customer's Cisco IAD 2431 generating following SDP. The SIP peer doesn't like the media parameter "a=rtpmap:19 CN/8000" in following SDP.  Two quick questions,


1.       What "a=rtpmap:19 CN/8000" represent in this SDP

2.       How can it be removed

3.       Is it possible that it cause fax failures ?


v=0
o=- 2847654225 2847654225 IN IP4 72.245.184.130
s=SIP Call
c=IN IP4 67.102.244.5
t=0 0
m=audio 17746 RTP/AVP 0 101 19
c=IN IP4 67.102.244.5
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:19 CN/8000
a=ptime:20

Thanks in advance for the input

Regards,

Rashid Shakil



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