one phone is phone system has modulation on handsfree

[reconrex]

I have a MICS with 4.1 software. One phone in the phone system has severe up and down volume while you are talking handsfree. It does this on internal and external calls. It appears to be worse on external calls. Most of the phones in the system are M7324. This phone and one other are T7316's. The other T7316 does not have this problem. I have had people from Tech support say that they think that it is background noise in the office, but the office is isolated and quieter than most of the offices in the building. Any help would be greatly appreciated.
Thanks in Advance
ReconRex

Rex Icard
Communication & Security Manager
Select Tel Systems

 

[lowradiation]

Switch phones with the one that is working to see if it is background noise or not.
If the other phone works fine then you have a faulty T7316.

 

[reconrex]

Thanks for the tip. I already changed out three different T7316's. This is why this problem is stumping me. The customer said that she did not have the problem with the 7324. Thanks for the tip though.

Rex Icard
Communication & Security Manager
Select Tel Systems

 

[jerryreeve]

The 7316's are more sensitive to background noise, even the reflected echo of their own speaker. Some of the 7316's are more sensitive than others, try putting the phone on a surface that is either cloth covered or a soft paper that will absorb some of the volume before the mike can pick up the reflelction from the desktop.

JerryReeve
Communications Systems Int'l
com-sys.com

 

[MarvO1]

Just moving air near the phone can cause problems. Is there an air vent above, or fan near the area of the set? The phone can pick up sounds that humans cannot hear and thus try to cancel the noise.

MarvO said it

 

[PhonesBrokeHuh]

Try a 7324 in that room to see if the problem is the room/air flow/bad cable run/port on system.

 

[reconrex]

Thanks for the info guys. The phone was sitting on top of a platic piece that raised the phone in the air and held it at an angle so that the sound waves seemed to bounce off of the desk. Moving the plastic piece and sitting the phone directly on the desk seems to have fixed the problem.

Thanks Again for the help.

Rex Icard
Communication & Security Manager
Select Tel Systems