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Author Topic: No Data From AVAYA IP Phones  (Read 2565 times)

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Offline dclake

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No Data From AVAYA IP Phones
« on: January 08, 2014, 07:37:10 AM »
Hi Everyone,

I have just encountered the weirdest problem at a customer and was wondering if you could be of any assistance.

The network utilizes AVAYA 3526 Switches, IP Office and a mix of 1608 and 9608 telephones. About a week ago we started having complaints of some users not being able to access any network resources (They could not ping anything on the network). These users were connected to the backs of their telephones and if I was to reset this connection (Unplug and plug back in) everything works but it would go down again after about 30 minutes.

If I remove the telephone and have them plugged straight into the switch they work just fine with no drops. The telephone also works and there are no drops in its connection back to the pbx. I have already tried changing the telephone to see if that would fix the problem but it has not.

Any ideas of what may be causing this or how to fix?

Offline Flintstone

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Re: No Data From AVAYA IP Phones
« Reply #1 on: January 08, 2014, 08:50:27 AM »
Hi dclake,

Please provide more information for the forum to help further.  I.e. Firmware and configuration of IP phones and switch etc.

I would double check that the port configuration on the switch matches the IP Phone VLAN configuration when the problem occurs?  I presume untagged PVID for the data VLAN and tagged for the Voice VLAN?  You could also use a sniffer to monitor the port on the switch to see if there is something else going on before and after the problem?


Offline Michael McNamara

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Re: No Data From AVAYA IP Phones
« Reply #2 on: January 16, 2014, 08:34:32 PM »
We're always looking for more information to try and be as helpful as possible.

I would suggest you focus on the Avaya IP phones... you can try and validate the issue by checking the MAC/FDB table on the ERS 3500 and verify that the MAC address of the client is present in the MAC/FDB table. You could also setup a port mirror (span port) and perform a trace to see if you see the PC traffic coming from the port connecting the Avaya IP phone.

Have you applied and firmware/software upgrades to the Avaya IP phones or IP Office recently?

Good Luck!
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