Michael, All I can say is that I had the same behavior in the past; now I can get it to work without adding the CME to CUCM. I know that by default for security reasons CUCM will deny connections from unknown sources; however to me the gatekeeper controlled trunk seems like an exception. In regards to the CSS; you use the Trunk's CSS for incoming calls.
If you wish I can take some traces from my lab and share them with you for further analysis. Regards, Roger Carpio. On Mon, Jan 17, 2011 at 5:40 PM, Michael Luo <hout...@gmail.com> wrote: > Hi Roger, > > I was hoping the same as you. But I couldn't figure out who to get it > worked without adding the H323 GW (CME) to CUCM. > > From my observation, adding H323 GW (CME) to CUCM is needed because: > > 1) For security reason, CUCM won't accept H323 connection from an "unknown" > source (ie. not configured in CUCM). > 2) Without the GW configured in CUCM, there's no way to configure in-bound > call parameters, such as Calling Search Space, Significant Digits, etc. > > So I guess without the GW being configured on CUCM, you can make outbound > calls (from CUCM to CME). But you cannot make inbound calls (from CME to > CUCM). > > Michael > > On Mon, Jan 17, 2011 at 4:24 PM, Roger Carpio <roger.car...@gmail.com>wrote: > >> Michael, >> >> You do not need to add the GW to CUCM; otherwise this will not be scalable >> at all. I had the same confusion but then I got it to work without adding my >> GW (CME) to CUCM. >> >> Regards, >> Roger Carpio. >> >> On Mon, Jan 17, 2011 at 2:16 PM, Michael Luo <hout...@gmail.com> wrote: >> >>> I was trying to understand the "Gatekeeper-controlled Trunk" in CUCM. >>> >>> If I configured the "Gatekeeper-controlled Trunk", do I still have to >>> configured the H323 gateways? >>> >>> Consider this scenario: >>> >>> GW --- GK --- CUCM >>> >>> If there's a call from GW to CUCM, my understanding was: >>> >>> 1) GW sends ARQ to GK. >>> 2) GK resolves the called number and sends ACF to GW. >>> 3) GW will try to communicate with CUCM. >>> >>> In step 3, if GW was not configured in CUCM, the call will fail. >>> >>> Did I understand this wrong? >>> >>> Thanks! >>> Michael >>> >>> >>> _______________________________________________ >>> For more information regarding industry leading CCIE Lab training, please >>> visit www.ipexpert.com >>> >>> >> >
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