AudioCodes Mediant 500 E-SBC, User Manual

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User's Manual 28. SBC Configuration
Version 6.8 501 Mediant 500 E-SBC
Call-ID: USEVWWAN@212.179.1.12
CSeq: 38 INVITE
Contact: <sip:7000@212.179.1.12>
Supported: em,100rel,timer,replaces
Allow:
REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER
User-Agent: Sip Message Generator V1.0.0.5
Content-Type: application/sdp
Content-Length: 155
v=0
o=SMG 5 9 IN IP4 212.179.1.11
s=Phone-Call
c=IN IP4 212.179.1.11
t=0 0
m=audio 8000 RTP/AVP 8
a=rtpmap:8 pcma/8000
a=sendrecv
a=ptime:20
The SIP message manipulations in the example above (contributing to typical topology
hiding) are as follows:

Inbound source SIP URI user name from "7000" to "97000":
From:<sip: 7000 @10.2.2.6;user=phone;x=y;z=a>;tag=OlLAN;paramer1
=abe
to
From:
<sip:
97000 @IP_PBX;user=phone;x=y;z=a>;tag=OWan;paramer1=abe

Source IP Group name (i.e., SIP URI host name) from "10.2.2.6" to "IP_PBX":
From:<sip:7000@ 10.2.2.6 ;user=phone;x=y;z=a>;tag=OlLAN;paramer1
=abe
to
From:
<sip:97000@
IP_PBX ;user=phone;x=y;z=a>;tag=OWan;paramer1=abe

Inbound destination SIP URI user name from "1000" to 9721000":
INVITE sip: 1000 @10.2.2.3;user=phone;x=y;z=a SIP/2.0
To: <sip: 1000 @10.2.2.3;user=phone>
to
INVITE sip: 9721000 @ITSP;user=phone;x=y;z=a SIP/2.0
To: <sip: 9721000 @ITSP;user=phone>

Destination IP Group name (SIP URI host name) from "10.2.2.3" to "ITSP":
INVITE sip:1000@ 10.2.2.3 ;user=phone;x=y;z=a SIP/2.0
To: <sip:1000@ 10.2.2.3 ;user=phone>
to
INVITE sip:9721000@ ITSP ;user=phone;x=y;z=a SIP/2.0
To: <sip:9721000@ ITSP ;user=phone>