AudioCodes E-SBC User Manual page 666

CHAPTER 26 Manipulation
The incoming redirection Facility message includes, among other parameters, the Diverted-to
number and Diverting number. The Diverted-to number (i.e., new destination) is mapped to the user
part in the Contact header of the SIP 302 response. The Diverting number is mapped to the user
part in the Diversion header of the SIP 302 response. These two numbers can be manipulated by
entering the following special strings in the 'Destination Phone Pattern' field of the Redirect Number
Tel-to-IP table:
■ "RN" - used in the rule to manipulate the Redirected number (i.e., originally called number or
Diverting number).
■ "DN" - used in the rule to manipulate the Diverted-to number (i.e., the new called number or
destination). This manipulation is done on the user part in the Contact header of the SIP 302
response.
For example, assume the following required manipulation:
■ Manipulate Redirected number 6001 (originally called number) to 6005
■ Manipulate Diverted-to number 8002 (the new called number or destination) to 8005
The configuration in the Redirect Number Tel-to-IP table is as follows:
Destination Phone Pattern
Redirect Phone Pattern
Stripped Digits From Right
Suffix to Add
Number of Digits to Leave
After the above manipulation is done, the device sends the following outgoing SIP 302 response:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/TLS 10.33.45.68;branch=z9hG4bKac54132643;alias
From: "MP118 1" <sip:8001@10.33.45.68>;tag=1c54119560
To: <sip:6001@10.33.45.69;user=phone>;tag=1c664560944
Call-ID: 541189832710201115142@10.33.45.68
CSeq: 1 INVITE
Contact: <sip:8005@10.33.45.68;user=phone>
Supported: em,timer,replaces,path,early-session,resource-priority
Allow:
REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SU
BSCRIBE,UPDATE
Diversion: <tel:6005>;reason=unknown;counter=1
Server: Sip-Gateway/7.20A.252.011
Reason: SIP ;cause=302 ;text="302 Moved Temporarily"
Content-Length: 0
Table 26-6: Redirect Number Configuration Example
Parameter
Mediant 1000 Gateway & E-SBC | User's Manual
- 628 -
Rule 1 Rule 2
RN DN
6 8
1 1
5 5
5 -