Dear Sirs, please help me to choose the right way. I am a network administrator in a company with a number of branches across Russia. We have a H.323 gateway connected to a internal PBX via ISDN PRI or copper in every branch. These gateways are: Cisco 28xx, AudioCodes MP104/14, Panasonic IP-GW4/16. Each gateway has it's own public IP address. I want to implement GNU Gatekeeper in this way: Alternative operators for long distance calls (IP Telephony). I want to note that I can not use GnuGK as H.323 Proxy because of insufficient bandwidth at the place where GnuGK will be placed. Is it possible to use "Direct Endpoint Call Signaling" with "intelligent digit manipulation'? Now I use 2 Carriers, these carriers accept calls in deferent ways: 1st Carrier accepts: country code + zone prefix + tel. number, for example - 74957390009 (7 - Russia, 495 - Moscow, 7390009 - tel. number). 2nd Carrier accepts: security prefix + country code + zone prefix + tel. number, for example - 58872558233874957390009 (588725582338 - security prefix, 7 - Russia, 495 - Moscow, 7390009 - tel. number). Let me show you the way I want a call to flow: User (CLI 5555) dials a long distance number: 988122250505 (9 - external line access, 8 - long distance access, 812 - Sankt-Peterburg, 2250505 - tel. number). A gateway sends ARQ with 988122250505 to a gatekeeper. Is GnuGK capable to do this: 1. Strip 98, add 7 and return to gateway modified called number with an IP address of the 1st Carrier? 2. Is it possible to change calling number (from 5555 to 73952335967)? 3. In the case of call rejection - sometimes 1st Carrier can not serve a call. Gatekeeper will use 2nd Carrier in such way - strips 98 adds security prefix and 7 and then return a modified called number with an IP address of the 2st Carrier? 4. Is it possible to use security prefixes in conjunction with calling number? Fore exaple: for calling numbers 5... GnuGK will use 588725582338, but for or calling numbers 1... GnuGK will use 194022936919 |
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