[SIPForum-discussion] Illegal SDP alarm in Softswitch

[Ramachandra moorthy]

Hi All,

Hope all are doing well.

Long back i have quired about "Illegal SDP alarm" and lots of response i
have received.Finally i have changed the Signal processing board in
softswitch of that particular MGW then problem got rectified for sometimes.

Now again i am getting same alarms in my softswitch.

The same softswitch is connected with 3 media gateways,but i am getting
alarm from a particular media gateway only.

I have few quires.

1.what is  the reson for these kind of alarms?
2.Why this is populated from a particular  media gateway?
3.How to avoid /rectify these kind of issues?

pls find the below SIP messages for your reference


*Alarm1*

illegal SDP Alarm
SDP Sequence Number:1
SDP Segment Sequence Number:1
SDP End Flag:1
SDP Body:v=0
c=IN IP4 10.180.166.32
m=audio 28254 R P/AVP 8
a=ptime:20
*a=rtpmap:8dPCMA/8000/1===>  The format is wrong,"d" should not appear *


Alarm2

illegal SDP Alarm
SDP Sequence Number:2
SDP Segment Sequence Number:1
SDP End Flag:1
SDP Body:v=0
c=IN IP4 10.180.166.46
*m=audio 12058 R P/AVP 8 ====>see here it should be RTP, some characters
are missing or misplaced.*
a=ptime:20






*With Regards M. Ramachandramoorthy+91- 9600070877*
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