You might try switching codecs to see if that changes the nature of the problem.
From: Nate Burke Sent: Wednesday, May 20, 2015 3:40 PM To: [email protected] Subject: Re: [AFMUG] Voip analog handoff to PBX I have several 4004's deployed, most into just basic 4 line handsets, or multiple physical phones. This is the only one going into a PBX, Don't remember the brand, but it's an appliance with analog handsets. I had another 4004 going into a Mitel 5000, and it had all kinds of problems with calls dropping/terminating until I put the Adtran in, it's been flawless since. I am using G.711 Nate On 5/20/2015 4:33 PM, Josh Reynolds wrote: We're using a 4008, and not seeing this... We are trunking to a UCM6104 though, which just runs asterisk under the hood. Is it happening on multiple ports/phones, or just that one? On May 20, 2015 1:24:44 PM AKDT, Nate Burke mailto:[email protected] wrote: I'm handing off 4 Analog lines to a PBX via a Grandstream GXW4004, and it's having random cutouts in the audio. The packet stream shows that it's having DTMF Events that are causing the cutouts, DTMF Tone 'D', so I"m pretty sure that it's not actually caused by keypresses. I'm guessing something between the ATA and the PBX there's an incompatibility. Is there another box quality wise to do 4 Analog lines before jumping all the way into the Adtran TA904? Maybe something in like the $300 area? Nate -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
