Annoying Dial tone for Answering machine

[LuvU43v3r]

I dont know how to describe this exactly but here is the situation. Before when I used the landline service, whenver someone called in and heard the greeting from the answering machine. If he/she hung up during the greetings or right after it, nothing happened on the answering machine. Now using GV + obitalk 110, and a phoneset with answering machine hooked to it, whenever callers hang up during the greeting or at the end (without leaving any message of course ) the answering machine sounds some very loud and annoying dial tone thru the speaker phone for around 3-5 seconds, but would not record it though.
I think there is the delay somewhere to detect the disconnection, but how to fix this problem?

[khantpr]

I have the exact same problem with my answering machine and after the message is left/not left I hear a loud dial-tone at the end. Any solution to eliminate would be helpful.

[LuvU43v3r]

I just have a few voice messages , and the problem is like what khantpr said. Basically, there is a very loud dial tone at the end with or without message is left . I think whenver the caller hang up, there  is a few seconds lagging between obitalk and  GV. Can the devs have some kind of detection to fix this problem?

[LeftRight]

It looks like your answering machine has some difficulty to recognize the CPC (calling party control) sent by OBi device. When OBi sees a call is ended, it sends out a CPC, then the dial tone for next new call... so, you may adjust CPC setting to make it suitable for your answering machine --

go to: Physical interface --> PHONE port --> CPCDuration & CPCDelayTime

You may make CPC duration a little longer than 500 ms, say 800 ms, see how it goes.. Also, adjust CPCDelayTime to be a little shorter, < 1000 ms... Just do a few experiments and find a good combination for your answering machine ...

[robhouston]

Setting these parameters at 800ms and 1000ms fixed the problem for me with a Panasonic DEC6 system.

Thanks for the simple suggestion to eliminate this annoying problem.

[LuvU43v3r]

Setting these parameters at 800ms and 1000ms fixed the problem for me with a Panasonic DEC6 system.

Thanks for the simple suggestion to eliminate this annoying problem.

I have exact Panasonic DEC6 system, but still does not work with Delay = 800ms, Duration = 1000ms. However, my situation is a bit different, I dont have landline connect to LINE port, just GV connects directly to Obi110 and PHONE port connects to the Panasonic base unit.

@ Robhouston: when you got some little time , can you make a setup like mine and confirm if your setting works ? Thanks.

[LeftRight]

I don't think LINE port matters.. It should not make any difference with LINE port connected to a landline or not.

I would suggest you try a few other combinations of Delay and Duration.

Keep CPCDuration within range of 800 ms to 1000 ms, you may tune CPCDelayTime down to a much lower value like 100ms or 10 ms, and see how it goes

[robhouston]

I didn't have the disconnect problem with GV.  My problem was strictly with the PSTN on the LINE port, and these settings on the PHONE port solved the problem.