Hi Rajeswari
First the call needs to be established
Only then u can put it on hold
INVITE a = sendrecv
A -----------> B
200OK a = sendrecv
A <------------ B
ACK
A ------------> B
The above will establish the call
Now send an Re-INVITE or UPDATE
Re-INVITE a = sendonly
A ------------> B
200OK a = recvonly
A <----------- B
ACK
A -----------> B
U can also use inactive
Pls refer RFC 3264
-Regards Ramya
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, May 07, 2008 10:10 AM
To: [email protected]
Subject: [Sip-implementors] REG: call hold
Hi all,
I want to connect to a useragent i.e, put him on hold from my
application. The useragent is not on any call initially .For this iam
creating an invite request and sending it to the useragent as below:
INVITE sip:[EMAIL PROTECTED]:12000 SIP/2.0
From:
<sip:[EMAIL PROTECTED]>;tag=42215289471803874_local.1210132738140_10
_10
To: <sip:[EMAIL PROTECTED]>
Call-ID: [EMAIL PROTECTED]
Max-Forwards: 70
CSeq: 2 INVITE
Content-Type: application/sdp
Content-Length: 159
v=0
o=user 0 0 IN IP4 10.238.115.216
s=-
c=IN IP4 0.0.0.0
t=0 0
m=audio 10000 RTP/AVP 0 101
a=rtpmap:0 pcmu/8000/1
a=rtpmap:101 telephone-event/8000/1
For this the useragent is sending response as:
SIP/2.0 200 OK
Content-Length: 243
User-Agent: X-Lite release 1002tx stamp 29712
Content-Type: application/sdp
Allow: INVITE
Allow: ACK
Allow: CANCEL
Allow: OPTIONS
Allow: BYE
Allow: REFER
Allow: NOTIFY
Allow: MESSAGE
Allow: SUBSCRIBE
Allow: INFO
CSeq: 2 INVITE
Call-ID: [EMAIL PROTECTED]
From:
<sip:[EMAIL PROTECTED]>;tag=42215289471803874_local.1210132738140_10
_10
To: <sip:[EMAIL PROTECTED]>;tag=3861b74f
Contact: <sip:[EMAIL PROTECTED]:12000>
Via: SIP/2.0/UDP
10.238.115.216:5060;branch=z9hG4bK870573921493445;ibmsid=local.121013273
8140_10_10
v=0
o=- 1 2 IN IP4 10.238.115.216
s=<CounterPath eyeBeam 1.5>
c=IN IP4 10.238.115.216
t=0 0
m=audio 12002 RTP/AVP 0 101
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=sendrecv
a=x-rtp-session-id:CEAECAD8CCB04812A04FE6D267EEB9A0
Iam creating the ACK for the response and sending it back and call got
established with the server and the useragent.
Now is it the right procedure to put a useragent on hold. If not please
suggest me the correct procedure,
Thanks & Regards
Rajeswari.R
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