01-12-2004 08:51 AM - edited 07-04-2021 09:16 AM
I have a problem with the connection/quality of speech when standing within 2-3 meters away of an AP with a 7920 phone. Also The connection to the CM is broken sometimes. (Also during a call) after the call drops the phone will connect to the CM automatically.
Phone software : 7920.3.3-01-06
Call manager : 3.3.3
AP : Cisco 1230 + 4941 'duck' antenna's
128 WEP is used, vlans are used no fancy stuff....
Also the quality of speech in not great...Hick-up's occure, calls drop sometimes.
the sitesurvey is OK. No overlapping channels (1,6,11) the RSSI is alway's above 20 , QBSS (CU) is also fine.
Does anyone have similar issue's. With this software
Reg
Goen
01-12-2004 03:38 PM
Hi there,
Can you advise what the output power on the APs you are using is set to?
Scott
01-13-2004 11:31 AM
50 mw. We also changed to 20 mW, however same problems remain. (a bit less to be honest)
01-13-2004 08:16 AM
I'm having the same issues. When you start to experience qos issues, how many phone calls are active on the AP?
01-13-2004 11:29 AM
Not much , on some pionts only two or three active calls.
02-02-2004 09:52 AM
Did you ever resolve your issue with the phones?
Thanks.
02-26-2004 08:59 AM
Not really, we just implemented the new 13JA2 software on the 1200's...See if this helps.
Reg
Goen
02-16-2004 11:31 AM
Goen,
Are you running VxWorks or IOS on the APs?
Thanks,
Scott
02-26-2004 08:59 AM
IOS , just upgraded to 13JA2...See if this helps
Reg
Goen
03-15-2004 09:24 AM
A couple of things we have discovered:
The phone likes choses. It may not roam well with just one AP as a chose, but will roam well if it has 2 to choose from.
Having RSSI levels above 20 just doesn't cut it when roaming. Develop roaming areas to allow the phone to have a couple of APs to choose from with RSSI values >=40.
06-30-2004 11:35 AM
Ensure you have latest firmware (1.07 for 7920 and 12.2(15)ja for IOS AP).
10-08-2004 04:22 AM
I am having a similair problem except i am using CCM 3.3(4) and AP 1120B did you manage to resolve this problem.
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