[Asterisk-Users] Re: Polycom 501 horrible echo

[Chad Osmond]

I have had no problems running the Sip.cfg from 1.5.2 with 1.6.4 so far,
but I am looking to update in the next while.

Chad 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Noah
Miller
Sent: January 27, 2006 1:07 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Re: Polycom 501 horrible echo

Hi - 

>>> I'm running 1.6.2.0041 according to my phone.
>>> 
>>> Which firmware "worked" for you?
>> 
>> It was the old firmware from when we first got the phones actually.
>> 1.4.x I think. Then I read that they fixed the CID issue and decided 
>> we needed an upgrade. I tried it out on my phone, but didn't really 
>> notice the problem until we had upgraded the rest. Oh well...
>> 
> 
> Also, these are IP 500 SIP.

We've been using Polycom phones since firmware version 1.3.0, and I've
used every version of the firmware since then in production on IP300s,
IP500s, IP501s, IP600s, IP601s and IP4000s.  I've never had this issue
on any of them.  I don't mean to downplay the issue, but it may be
possible that you did, in fact, get a bad batch of phones.  When I've
ordered these phones in quantity before, I've gotten many phones with
consecutive serial/mac addresses, so they were probably manufactured in
a bunch.  Maybe a bad batch of mics got installed on a group of phones?

One thing I was pondering: you are not, by chance, using the same
sip.cfg between version 1.4.1 and version 1.6.2 are you?  The file has
changed significantly between these versions, and certain acoustic
settings that worked with 1.4.1 may not work with 1.6.2 (Not to mention
that ipmid.cfg and sip.cfg were merged in the 1.5.x release).


- Noah

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