echo IP phones

AT383 · March 21st, 2004, 07:57 AM

What causes echo on an IP phone? The phone works through a Cisco ethernet switch and router across a WAN to a Definity G3r. Is there anything on either side of the WAN to reduce/eliminate echo? All trunk access is through the G3r. Apparently, echo even occurs on a station to station call on the remote end. The data equipment on each end is Cisco.

stubborne · March 22nd, 2004, 02:41 PM

Quote:

Originally Posted by AT383

What causes echo on an IP phone? The phone works through a Cisco ethernet switch and router across a WAN to a Definity G3r. Is there anything on either side of the WAN to reduce/eliminate echo? All trunk access is through the G3r. Apparently, echo even occurs on a station to station call on the remote end. The data equipment on each end is Cisco.

Do you have QoS implemented on
a) PBX lan segment?
b) Phone lan segment?
c) wan segment?

AT383 · March 25th, 2004, 10:32 PM

Yes. VoIP is priority

stubborne · March 26th, 2004, 08:43 AM

We have isolated incidents of echo but nothing that has major impact. Calls that pass thru multiple trunks are always subject to echo, especially digital - analog.

stubborne · March 26th, 2004, 08:45 AM

"echo even occurs on a station to station call on the remote end"

did you stat stations to ensure you had ip-ip call?

AT383 · March 27th, 2004, 09:02 PM

I'll check. Thank you

wash570 · July 7th, 2004, 06:50 AM

Hi, Did you ever stop your echo? Is it an Avaya System?

March 21st, 2004, 07:57 AM	#1 (permalink)
AT383 Join Date: Mar 2004 Posts: 3	echo IP phones What causes echo on an IP phone? The phone works through a Cisco ethernet switch and router across a WAN to a Definity G3r. Is there anything on either side of the WAN to reduce/eliminate echo? All trunk access is through the G3r. Apparently, echo even occurs on a station to station call on the remote end. The data equipment on each end is Cisco.

March 25th, 2004, 10:32 PM	#3 (permalink)
AT383 Join Date: Mar 2004 Posts: 3	Re: echo IP phones Yes. VoIP is priority

March 26th, 2004, 08:43 AM	#4 (permalink)
stubborne PBXtech PLATINUM 300+ posts Join Date: Jul 2003 Posts: 401	Re: echo IP phones We have isolated incidents of echo but nothing that has major impact. Calls that pass thru multiple trunks are always subject to echo, especially digital - analog. __________________ Stu

March 26th, 2004, 08:45 AM	#5 (permalink)
stubborne PBXtech PLATINUM 300+ posts Join Date: Jul 2003 Posts: 401	Re: echo IP phones "echo even occurs on a station to station call on the remote end" did you stat stations to ensure you had ip-ip call? __________________ Stu

March 27th, 2004, 09:02 PM	#6 (permalink)
AT383 Join Date: Mar 2004 Posts: 3	Re: echo IP phones I'll check. Thank you

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July 7th, 2004, 06:50 AM	#7 (permalink)
wash570 Join Date: Jul 2003 Posts: 3	Re: echo IP phones Hi, Did you ever stop your echo? Is it an Avaya System?

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