Nortel VoIP problems
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Posted by on June 27, 2005, 2:20 pm
Please log in for more thread options Hey, I'm having a problem with our 4-digit dialing. Our Nortel services vendor upgraded our corporate office's Succession CSE 1000 to v4.0. Immediately all 12 of our sites could not contact us. They then applied a patch that allowed us to communicate with all locations running BCM 3.5. The remaining BCM 3.0 sites were upgraded to 3.5 and began to work. After this we noticed many of the calls from different sites could not hear anything on our end (corporate). The problem only happens when the remote site calls us, it works fine when we call them. We can always hear them; they just can't hear us at all. It's intermittent, occurring between 5% and 65% of the time depending on location, and some locations never experience it. Our vendor believes it to be a QOS issue, but nothing on the routers has changed. Also we run fractional T1's with severely restricted internet access so our bandwidth usage is nominal. In addition, a QOS issue would cause intermittent drops on individual calls, but when our problem occurs they hear complete silence for as long as the call lasts and can call right back and hear us perfectly (sometimes). I have no idea what could be causing this problem. Any suggestions? Thanks so much. Mike | |||||||||||||||||||||||||||||||||||||
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Posted by XBarNone on June 28, 2005, 12:49 am
Please log in for more thread options Hey Mike: Is there an ITG card in the succession switch at your host site. If so, what release firmware and software is it using. | |||||||||||||||||||||||||||||||||||||
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Posted by on June 30, 2005, 2:39 pm
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I believe so, but I can't find it. I'm running OTM v2.01 and there are no nodes set up for the ITG card so I can't see anything about it. I can't set up a new node because I don't know the Active leader IP address or the physical address of the card (if there is one). Looking at the Succession unit itself is no help either. No reference to ITG on the Signalling server or the gatekeepers. On the phone, Nortel recommended upgrades of our BCM to v3.6 (we are at 3.5), signaling server to v4.0.55, and Media Card firmware to v6.5... but my vendor didn't bite sticking with their ridiculous QOS theory. I still have no idea what we're running now because we were never given an upgrade list on the invoice and have pretty much cut off communication with our vendor. How do I find out if it's there and what version it is? Mike XBarNone wrote: > Hey Mike:
> > Is there an ITG card in the succession switch at your host site. If so, what > release firmware and software is it using. > > > > Hey,
> > > > I'm having a problem with our 4-digit dialing. Our Nortel services > > vendor upgraded our corporate office's Succession CSE 1000 to v4.0. > > Immediately all 12 of our sites could not contact us. They then > > applied a patch that allowed us to communicate with all locations > > running BCM 3.5. The remaining BCM 3.0 sites were upgraded to 3.5 and > > began to work. > > > > After this we noticed many of the calls from different sites could not > > hear anything on our end (corporate). The problem only happens when > > the remote site calls us, it works fine when we call them. We can > > always hear them; they just can't hear us at all. It's intermittent, > > occurring between 5% and 65% of the time depending on location, and > > some locations never experience it. > > > > Our vendor believes it to be a QOS issue, but nothing on the routers > > has changed. Also we run fractional T1's with severely restricted > > internet access so our bandwidth usage is nominal. In addition, a QOS > > issue would cause intermittent drops on individual calls, but when our > > problem occurs they hear complete silence for as long as the call lasts > > and can call right back and hear us perfectly (sometimes). > > > > I have no idea what could be causing this problem. > > > > Any suggestions? > > > > Thanks so much. > > > > Mike > > | |||||||||||||||||||||||||||||||||||||
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Posted by compufxr on July 1, 2005, 12:04 am
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I think you have a bandwidth issue. What codec are you running? We had a similar problem with an SRG and a Succession. Our technician changed the codec from G711 to G729 and turned on the voice activation feature. You can always give that a try. For some reason I have had very bad luck with BCM's and VOIP in general. | |||||||||||||||||||||||||||||||||||||
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Posted by on July 1, 2005, 11:14 am
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I can all but gaurantee you it's not a bandwidth issue, voip is virtually the only thing we run, 4 lines over 1.028M/s. No idea what codec we're running, but our technician never brought any of that up. How do you check what version codec you have; is it on BCM or succession? I heard from someone else it could be problem with the jitter buffer. compufxr wrote: > I think you have a bandwidth issue. What codec are you running? We
> had a similar problem with an SRG and a Succession. Our technician > changed the codec from G711 to G729 and turned on the voice activation > feature. You can always give that a try. > > For some reason I have had very bad luck with BCM's and VOIP in general. | |||||||||||||||||||||||||||||||||||||
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>
> I'm having a problem with our 4-digit dialing. Our Nortel services
> vendor upgraded our corporate office's Succession CSE 1000 to v4.0.
> Immediately all 12 of our sites could not contact us. They then
> applied a patch that allowed us to communicate with all locations
> running BCM 3.5. The remaining BCM 3.0 sites were upgraded to 3.5 and
> began to work.
>
> After this we noticed many of the calls from different sites could not
> hear anything on our end (corporate). The problem only happens when
> the remote site calls us, it works fine when we call them. We can
> always hear them; they just can't hear us at all. It's intermittent,
> occurring between 5% and 65% of the time depending on location, and
> some locations never experience it.
>
> Our vendor believes it to be a QOS issue, but nothing on the routers
> has changed. Also we run fractional T1's with severely restricted
> internet access so our bandwidth usage is nominal. In addition, a QOS
> issue would cause intermittent drops on individual calls, but when our
> problem occurs they hear complete silence for as long as the call lasts
> and can call right back and hear us perfectly (sometimes).
>
> I have no idea what could be causing this problem.
>
> Any suggestions?
>
> Thanks so much.
>
> Mike
>