Hi Rene,
thanks for the update.
There is a quite detailed explanation of what i'm doing:
I've got two switches on site - sip server and Cisco CallManager. Each has it own numbering plan (like on SipServer user extensions have DNs of 3 digit starting from 1, RPs use 3 digit numbers starting from 7 etc and on CCM extensions have 4 digit numbers starting from 1, RPs - 4 digits starting from 5 etc) and those plans overlap.
In order to perform inter switch calls (and to use ISCC) i'm using prefixes on both switches, like 6 for CCM on SIpServer and 7 for SipServer on CCM.
So when i need for exapmle to call RP 702 on SipServer from user extension on CCM i dial 7702 and call is sent to SIP server via proper trunk. Before sending call to SipServer CCM replaces prefix 7 from the DNIS and SIpServer recieves INVITE with proper number 702 that it is able to recognize and route. CCM knows about where to send what call from so called RoutePattern, that is quite flexible, so i can do many things with a call related information before sending it out.
As per my understanding on SIpServer same functionality is realized via DN of type Trunk, that has an option called "replace-prefix". According to SIP Server 7.5 deployment guide there is an option called "replace-prefix" that "Contains the digits that are inserted in the DN instead of the prefix for the gateway. If this annex is empty or absent, the number is not modified".
So what i'm trying to do is to set up number translation on sip server side in the same way as on CCM side i.e. use same prefix (say 6) for dialing all CCM DNs from SipServer. But the problem that i'm facing at the momnet is that i can't remove the prefix from the calls, i can only replace it with another digit. May be i should use some special symbol that can be interpreted by SipServer as digit to be removed? It seems to me that this is very common requirement and it should be realized in SipServer.
Hope this clarifies the problem. Waiting for your update.
Kos.
