FW: RRQ Registration in H.323 V2
Chris.Purvis at MADGE.COM
Thu Apr 22 10:02:47 EDT 1999
Chris (R) [Why do your mails come from RobB???],
>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
> -----Original Message-----
> From: Rob B [mailto:robb112 at HOTMAIL.COM]
> Sent: 21 April 1999 7:10
> To: ITU-SG16 at MAILBAG.INTEL.COM
> Subject: Re: FW: RRQ Registration in H.323 V2
> >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,
> >first an alias that identifies the gateway, followed by a full phone
> >starting 408 or 409? If not, what is the intended action from an
> >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.
> -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
> >> >
> >> >
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