INVITE examples

It is recommended that you format the FROM, TO, REMOTE PARTY ID, AND P-ASSERTED-ID fields of your invite using E.164 format.  E.164 format can include a maximum of 15 digits and are typically written as: +County Code and number (+** **********). Phone numbers that are not formatted in E.164 may still work, though it depends on which format is received and which carrier it terminates through.

To format an international number using E.164 you would change 442077227711 to +442077227711. If you have an international number which begins with 0, you will need to remove the leading 0 before adding the plus sign.

*Toll Free: send E.164(+1) or 11 digits, 10 digits will fail.

Please make your INVITES look like the following (if you are using the Smart A record a.icr.commio.com would replace icr.commio.com):

Please Note - It is best practice to send in 11 digit or E.164 formatting for both From and To numbers.

Example 1: sending 11 digits, no E.164, no prefix

INVITE sip:19198900000@icr.commio.com SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK22f387ce;rport.
From: "thinQ" <sip:19198900000@xxx.xxx.xxx.xxx>;tag=as08310909.
To: <sip:19198900000@icr.commio.com>.
Contact: <sip:19198900000@xxx.xxx.xxx.xxx>.
Call-ID: 1ea01a2f16e135cd1e6cacaf5e79202a@xxx.xxx.xxx.xxx.
CSeq: 102 INVITE.
User-Agent: Vamp UAC.
Max-Forwards: 70.
Date: Wed, 25 Apr 2012 16:14:16 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Content-Type: application/sdp.
Content-Length: 240.
.
v=0.
o=root 3226 3226 IN IP4 xxx.xxx.xxx.xxx.
s=session.
c=IN IP4 xxx.xxx.xxx.xxx.
t=0 0.
m=audio 11444 RTP/AVP 0 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

Example 2: sending 11 digits, E.164, no prefix

INVITE sip:+19198900000@icr.commio.com SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK22f387ce;rport.
From: "thinQ" <sip:19198900000@xxx.xxx.xxx.xxx>;tag=as08310909.
To: <sip:19198900000@icr.commio.com>.
Contact: <sip:19198900000@xxx.xxx.xxx.xxx>.
Call-ID: 1ea01a2f16e135cd1e6cacaf5e79202a@xxx.xxx.xxx.xxx.
CSeq: 102 INVITE.
User-Agent: Vamp UAC.
Max-Forwards: 70.
Date: Wed, 25 Apr 2012 16:14:16 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Content-Type: application/sdp.
Content-Length: 240.
.
v=0.
o=root 3226 3226 IN IP4 xxx.xxx.xxx.xxx.
s=session.
c=IN IP4 xxx.xxx.xxx.xxx.
t=0 0.
m=audio 11444 RTP/AVP 0 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

Example 3: sending 11 digits, E.164, prefix 1234

INVITE sip:1234+19198900000@icr.commio.com SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK22f387ce;rport.
From: "thinQ" <sip:19198900000@xxx.xxx.xxx.xxx>;tag=as08310909.
To: <sip:19198900000@icr.commio.com>.
Contact: <sip:19198900000@xxx.xxx.xxx.xxx>.
Call-ID: 1ea01a2f16e135cd1e6cacaf5e79202a@xxx.xxx.xxx.xxx.
CSeq: 102 INVITE.
User-Agent: Vamp UAC.
Max-Forwards: 70.
Date: Wed, 25 Apr 2012 16:14:16 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Content-Type: application/sdp.
Content-Length: 240.
.
v=0.
o=root 3226 3226 IN IP4 xxx.xxx.xxx.xxx.
s=session.
c=IN IP4 xxx.xxx.xxx.xxx.
t=0 0.
m=audio 11444 RTP/AVP 0 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

Example 4: sending 11 digits, no E.164, prefix 1234

INVITE sip:123419198900000@icr.commio.com SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK22f387ce;rport.
From: "thinQ" <sip:19198900000@xxx.xxx.xxx.xxx>;tag=as08310909.
To: <sip:19198900000@icr.commio.com>.
Contact: <sip:19198900000@xxx.xxx.xxx.xxx>.
Call-ID: 1ea01a2f16e135cd1e6cacaf5e79202a@xxx.xxx.xxx.xxx.
CSeq: 102 INVITE.
User-Agent: Vamp UAC.
Max-Forwards: 70.
Date: Wed, 25 Apr 2012 16:14:16 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Content-Type: application/sdp.
Content-Length: 240.
.
v=0.
o=root 3226 3226 IN IP4 xxx.xxx.xxx.xxx.
s=session.
c=IN IP4 xxx.xxx.xxx.xxx.
t=0 0.
m=audio 11444 RTP/AVP 0 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

Example 5: sending 11 digits, E.164, prefix 1234

INVITE sip:1234+19198900000@icr.commio.com SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK22f387ce;rport.
From: "thinQ" <sip:19198900000@xxx.xxx.xxx.xxx>;tag=as08310909.
To: <sip:19198900000@icr.commio.com>.
Contact: <sip:19198900000@xxx.xxx.xxx.xxx>.
Call-ID: 1ea01a2f16e135cd1e6cacaf5e79202a@xxx.xxx.xxx.xxx.
CSeq: 102 INVITE.
User-Agent: Vamp UAC.
Max-Forwards: 70.
Date: Wed, 25 Apr 2012 16:14:16 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Content-Type: application/sdp.
Content-Length: 240.
.
v=0.
o=root 3226 3226 IN IP4 xxx.xxx.xxx.xxx.
s=session.
c=IN IP4 xxx.xxx.xxx.xxx.
t=0 0.
m=audio 11444 RTP/AVP 0 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.