Hi Ankur

The RFC does mention about ptime but does not mention such scenarios though. 
Thank you for precise explanation. Appreciate it!

Thanks 
Sundar 

> On Nov 26, 2013, at 7:32 PM, ankur bansal <abh.an...@gmail.com> wrote:
> 
> Hi Sundar
> 
> As far as i remember  this ptime parameter is media level attribute and it 
> should be same for all payloads mentioned for that particular media line .You 
> can check more in SDP RFC 4566.
> 
> Thanks & regards
> Ankur Bansal
> 
> 
>> On Tue, Nov 26, 2013 at 12:01 PM, Sundar Ramakrishnan <mok...@gmail.com> 
>> wrote:
>> Hello,
>> 
>> I have a question on how to handle multiple codec with multiple ptime in
>> the invite. My calls fail if I use the format mentioned here. Is this
>> format in the invite fine?
>> 
>> *INVITE sip:u...@abc.com <sip%3au...@abc.com> SIP/2.0*
>> 
>> *ax-Forwards: 70*
>> 
>> *Via: SIP/2.0/UDP
>> 192.168.64.16:5069;branch=z3hG4bK0-c0a94010-0009-1321269311*
>> 
>> *Supported: *
>> 
>> *Call-ID: 9-131126151850-1486236468@c0a84010*
>> 
>> *CSeq: 719958089 INVITE*
>> 
>> *From: <**sip:u...@abc.com <sip%3au...@abc.com>*
>> *>;tag=9-c0a94010-131126251850-116323010*
>> 
>> *To: <sip:u...@abc.com <sip%3au...@abc.com>>*
>> 
>> *Contact: <sip:UAC9@192.168.64.16:5069;transport=udp>*
>> 
>> *Content-Type: application/sdp*
>> 
>> *Accept: application/sdp, application/dtmf-relay*
>> 
>> *Content-Length: 473*
>> 
>> 
>> 
>> *v=0*
>> 
>> *o=- 219866560 219866561 IN IP4 192.168.64.16*
>> 
>> *s=-*
>> 
>> *c=IN IP4 192.168.64.16*
>> 
>> *t=0 0*
>> 
>> *m=audio 20096 RTP/AVP 18 96 8 3 9 97 98 0 4*
>> 
>> *a=rtpmap:18 G729/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:96 G726-16/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:8 PCMA/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:3 GSM/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:9 G722/8000*
>> 
>> *a=fmtp:9 bitrate=48000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:97 AMR-WB/16000*
>> 
>> *a=fmtp:97 octet-align=1; mode-set=0*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:98 EVRCB/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:0 PCMU/8000*
>> 
>> *a=ptime:20*
>> 
>> *a=rtpmap:4 G723/8000*
>> 
>> *a=ptime:30*
>> 
>> 
>> 
>> 
>>  *Although, upon reading this RFC
>> <http://tools.ietf.org/id/draft-garcia-mmusic-multiple-ptimes-problem-03.txt>
>> which is expired says its not allowed. Can everyone throw more light on
>> this and help please?*
>> 
>> 
>> *Thanks*
>> 
>> 
>> 
>> *Sundar *
>> _______________________________________________
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>> Sip-implementors@lists.cs.columbia.edu
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> 
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