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stuttering phone calls

I have a problem where a phone call will have every other word getting dropped. This happens randomly.

running Callmanager 4.1 (3) sr2 and Unity 4.0 (5).

I have had telephone service company test the lines twice but they dont see any Interference. I have tested local lines but since it happens randomly dont think it could be the lines at all.

I am out of ideas. Anyone have any advice.

1 REPLY

Re: stuttering phone calls

Hi,

check the half/full duplex negotation at the Ethernet port of IP phones. Try to ping an ip phone and see if every second packet is lost.

This might be the problem. Set the switch ports (the ones connecting IP phones) to hard values, rather than auto-negotiation.

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