George, Sounds like you've covered most bases but ... Check the position of the phones as relates to the microphone hole.
This may not apply in your case but it's an exemplary story: we had a phone with speakerphone trouble, worked fine everytime we replaced it, then within 1/2 hour it went bad again. After multiple phones and cards, I sat in the office with the person for that first 1/2 hour. After about 15 minutes of seeing that it was working, the user decided it was time to put all her post-it notes back on the phone... including a piece of tape with an important note that went right over the microphone hole. Problem solved. A similar probelm occurred when the client had a cluttered desk with a book right in front of the phone base. Charles ----- Original Message ----- From: "George Gleason" <[EMAIL PROTECTED]> To: "KXT Help" <[EMAIL PROTECTED]> Sent: Friday, August 20, 2004 3:59 AM Subject: KX-T: KXTD speakerphone very strange problem > > > Hi y'all- > > This one's been vexing me for months. > > System: New KXTD-816-7 with one or two KXT-7453, one or two KXT-7431, > and a few legacy 7000-series sets. Site is a home with home office, > with commercial-grade voice&data cable that was run by our cable > specialist. > > Problem: > > Incoming or outgoing CO call on speakerphone, KXT-7453 or 7431, same > problem with each: At some time into the conversation (from 5 minutes > to 20 minutes, it varies), the microphone sensitivity of the > speakerphone seems to decline, or the gain-switching seems to become > less sensitive, such that the person has to speak louder and louder in > order to be heard. If the person tries to ignore it and keep speaking > louder and louder, there comes a point where they are shouting and not > being heard at all, as if the speakerphone has gone deaf. > > If the person transfers the call to another -7400 series speakerphone, > and continues the conversation on that phone, the problem disappears > for a while (5 to 20 minutes) and then recurs during the same > conversation. If the person then transfers the call back to the > original -7400 series speakerphone, the problem disappears for a while > (5 to 20 minutes) and then recurs during the same conversation. There > are no problems using the handset. > > So, for any given -7400 series speakerphone, it appears to go slowly > "deaf" during a conversation, but transferring a call back & forth > between speakerphones seems to solve it for a while until they go > "deaf," and you can play the transfer round-robin game endlessly with > the same results during any given conversation. > > We replaced the 816-7 cabinet with another brand new one, and > programmed it manually (didn't upload the batch file from the previous > cabinet), all programming using the Panasonic DOS tool. Problem > continued. > > So far what we have is: > > It seems to be independent of the telephone set, -7453 or -7431. It > appears to be independent of the PBX cabinet, which we replaced. > > It's not the station cable, which was run by our cable specialist, who > is absolutely meticulous and always gets a 100% pass on all his voice & > data cable on the first test. And I'm not just being partial to his > work, he really is the best in town. > > I have heard of problems associated with CO lines using "pair gain" > technology by the local carrier; so I checked that, and the carrier > (SBC) says these lines are on clean individual pairs back to the CO. > > We infer that there is not an AC mains anomaly, as the client has no > problems such as shrinking or flickering images on their computer > screen, which would normally occur if there were power line voltage > fluctuations or power surges etc. Also the system is on a surge > protector. > > > Has anyone here ever encountered something like this before, and if so, > what was causing it, and what was the fix? Or am I dealing with a > haunted house?:-) > > -George Gleason > 510-843-2667 extn 205 > [EMAIL PROTECTED] > (spammers are terrorists and will be dealt with accordingly) > > > _________________________________________________________________ > KX-T Mailing list --- http://kxthelp.com/ > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
