We're using Cisco CallManager as our gateway, but we had to put an SBC in front of sipXecs. So it looks something like:
CM --(SIP trunk)--> OpenSBC --> SipXecs We discovered that CallManager -- at least the version we're running -- doesn't handle SIP REFERs when providing a SIP trunk, effectively breaking the auto attendant for calls coming in via the trunk. OpenSBC is able to handle the REFERs, resolving that issue. I wonder if sipXbridge in version 4 would be able to handle REFERS...? Other than that, CM seems to be working well for us. I haven't investigated the licensing side, but my understanding is that the licensing works differently when a trunk is being provided vs. the licensing for having real users managed in CM. From: [email protected] [mailto:[email protected]] On Behalf Of Mike Ketchum Sent: February 6, 2009 8:32 AM To: [email protected] Subject: Re: [sipx-users] Gateways So on the topic of gateways...do many of you use Cisco as a voice gateway? I use one as a gateway for my lab, but haven't researched the price point to determine if its economical as a standard solution, but it seems to do the job fine...and its familiar code for those with a Cisco VoIP background. Thoughts? Pete Burgess wrote: I'll throw in my 2 cents here. I have an AudioCodes MP114 at my office, an MP114 at client site and a Mediant 600 at another client. In addition I've just swapped out my MP114 at my office for a Patton SmartNode 4114. The MP114's aren't great... using them for faxing (T38 to Exchange 2007 UM) is a bit patchy. An HP fax machine I have completes faxes all the time. A Dell fax machine never completes - the MP114 just doesn't pick up the fax tones. AudioCodes support can't tell me why. I'm inclined to think that this is an issue with crappy POTS lines as the Mediant 600 at a client site is doing the same job (in fact it's only used for faxing into Exchange UM) and works like a champ. Of note is that the Mediant shipped with a firmware that didn't work for the US market... try to configure it for a T1 and it would error, barf and then put all settings back to E1. That provided me with hours of entertainment. Lastly, messing around with the gain levels on the MP114s to get enough volume but no distortion or echo was a complete nightmare I never wish to experience again. The Patton gateway initially looked like rocket science, but to be fair I did only just pull it out of the box and hook it up yesterday morning. Took me an hour to pull a config from the Patton support site, tweak it and get it up and running. Upgrading the firmware broke the config (as stated in the documentation) and it took me another hour or so to sort it out. If you're familiar with Cisco IOS you won't have any problem learning it though. Unfortunately the Patton's don't appear to do SIP over TCP. If you're doing SipX that doesn't really come into it but if you want to send calls directly to OCS or Exchange you'll have issues. I'll happily stand corrected on that, though. As for support, you can't contact AudioCodes support directly (unless you pay), all support has to be done through your reseller. The reseller contacts the distributor, the distributor either resolves the issue or sends it direct to AudioCodes. It's all a bit long winded and in the case of my distributor they won't talk directly to the client. I don't have much experience with Patton's support as yet but I sent them an email yesterday and got a response within an hour. No complaints there. The issue I'm trying to resolve is that the Patton isn't picking up incoming caller ID. Pete -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Picher, Michael Sent: Friday, February 06, 2009 8:56 AM To: Mitchell, Kenny (Ineos); [email protected] Subject: Re: [sipx-users] Gateways The AudioCodes gateways are always a battle. Their lack of technical support along with their poor audio quality drove me away from them (this experience is back in the mp-104 and mp-108 days). I tried Mediatrix also and they were horrific back in the day. You actually had to use an SNMP tool to set the unit up. It was like pulling teeth. For me the Patton started a little rocky until I got used to it. They are very powerful and router like. To this day I rarely use the web interface and usually head straight for the command line. The Patton tech support is pretty good and we have some good example configurations in the Wiki. Mike -----Original Message----- From: [email protected] [mailto:sipx-users- [email protected]] On Behalf Of Mitchell, Kenny (Ineos) Sent: Friday, February 06, 2009 8:00 AM To: [email protected] Subject: Re: [sipx-users] Gateways As a new convert to VoIP and Sip-X, I'd like to hear what the rest of the mailing list users experiences are with gateway devices. For the installation I'm working on I have to link into existing Siemens switches for my outside lines, and so I purchased a Mediant 1000 modular gateway to allow me to experiment a bit and to upgrade as I roll out Sip-X to the users. It's hideously complex, has no manual, and support appears to be handled via putting requests in bottles and throwing them in the sea. From speaking off-board with Milosz he has had the same experience as myself and has since started buying Pattons. Can the rest of you let me know if you have significant experience of a particular gateway, good or bad, so that we noobies know what to avoid or aim for? You can read specs or the occasional review, but that's not substitute for experince with these devices. Kenny Mitchell Infrastructure Analyst Ineos Refinery _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users
