Chris, H.323 V2 specifically says that each alias address should map to a unique transport address. So, as you pointed out my second RRQ would get rejected because alias is the same "voip-gw.hotmail.com" but a different transport address is registered :-( So, the only option left for me is to choose some dummy alias in my RRQs. Section 7.2.2 H.323V2 "A Gateway or MCU may register a single Transport address or multiple transport addresses. The use of multiple transport addresses may simplify the routing of calls to specific ports" How can a _single_ gateway achieve the above stated. (Because what I am doing by sending multiple RRQs with different aliases is essentially simulating multiple logical gateways in the network.) Btw, one another related question. What is the meaning of multiple callSignalAddresses of _same_ transport type in RRQ.callSignalAddress. Is this possible and if possible how will the gatekeeper use them? I have a private mail from one vendor that multiple callSignalAddresses of the same transport type are possible in RRQ but no one uses them. I think I have to agree with him. Thanks for your time. -Chris.

From this description it seems fairly clear that you (logically, from a protocol point of view) have two gateways that happen to be

collocated. The >only alias you're passing around is the phone number, and that wants to go >to different places according to how it starts. However in an earlier mail >you said you only had a single gateway because you only have a single >terminalAlias ("something like voip-gw.hotmail.com"). As this alias appears >not to be passed around at any point during call setup it appears >irrelevant, although registering the same alias to different (logical) >gateways to the same gatekeeper at the same time may cause problems to some >gatekeepers. > >Regards, >Chris > >> -----Original Message----- >> From: Rob B [mailto:robb112@HOTMAIL.COM] >> Sent: 21 April 1999 7:10 >> To: ITU-SG16@MAILBAG.INTEL.COM >> Subject: Re: FW: RRQ Registration in H.323 V2 >> >> >> Chris, >> >> > >> >Just trying to understand the problem fully before jumping in with a >> >suggested solution: >> >How are you expecting people to call via this gateway? >> >Is the intention to place a call to multiple destionationInfos, >> specifying >> >first an alias that identifies the gateway, followed by a full phone >> number >> >starting 408 or 409? If not, what is the intended action from an >> endpoint >> >attempting to call through this gateway? >> > >> >> My customers would have something like Netmeeting. They would >> make calls with an area code, say like 1-408-555-6666. >> >> Let us say I have GW1 and GK. GW1 supports area codes 408 and >> 409. It registers these two voice call prefixes (1408 and 1409) >> with GK along with port numbers 2000 and 3000. Any incoming >> calls on port 2000 are automatically assumed to be outgoing >> calls to area code 408 (so that GW1 need not again parse the >> calledPartyNumber in the incoming message). Parsing of the >> remaining number would be done at much later point in time. >> >> Now, when a call originates from netmeeting, the ARQ would contain >> the destination telephone number (1408555666) in the >> "destinationInfo". GK receives this ARQ and figures out >> that it has GW1 which registered the prefix 1408. So, GK returns >> the <GW1 IP Address + 2000> to netmeeting. And netmeeting would >> directly send the Q.931 SETUP message GW1's port 2000. >> >> This is what I am looking for. >> >> Thanks, >> -Chris (R) >> >> >> >> >I have a question on RRQ registration in H.323V2. Let us say >> >> >I have a gateway that supports area codes 408, 409. I want >> >> >my gatekeeper to route calls to area codes 408 and 409 >> >> >to my local TCP ports 2000 and 3000 respectively. How should >> >> >I construct my RRQ message? >> >> > >> >> >Shall I send two RRQs with same endpoint identifier >> >> >(because I have only one gateway) with tuples >> >> ><408, 2000> and <409, 3000>. >> >> > >> >> ><x,y> means: x: carried in SupportedProtocols.prefix >> >> > y: carried in callSignallingAddress of RRQ message >> >> > >> >> >Is my understanding correct? >> >> > >> >> >-Chris Rob >> >> > >> >> > >> >> >> _______________________________________________________________ >> Get Free Email and Do More On The Web. Visit http://www.msn.com >>

_______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com