It was pots line powered too. I was quite proud of the circuit.
From: Lewis Bergman
Sent: Thursday, May 21, 2015 7:59 AM
To: af@afmug.com
Subject: Re: [AFMUG] Voip analog handoff to PBX
I really want to know Chuck...is there anything you have not built? You were on
the Apollo team when you were 12 right?
On Thu, May 21, 2015 at 8:26 AM, Chuck McCown <ch...@wbmfg.com> wrote:
I once built an amplified headset for a large call center operation. It had
an on and off button that would used an attached modem to send the C and D
tones to connect and disconnect the call. We were on track to build about 9000
units when they discovered the modems that would be on the line could not
generate C & D tones.... arrgh...
From: Ken Hohhof
Sent: Wednesday, May 20, 2015 5:37 PM
To: af@afmug.com
Subject: Re: [AFMUG] Voip analog handoff to PBX
I don't think anyone even uses the touchtone "D" button, do you see it on
your phone?
-----Original Message-----
From: Faisal Imtiaz
Sent: Wednesday, May 20, 2015 5:56 PM
To: af@afmug.com
Subject: Re: [AFMUG] Voip analog handoff to PBX
Is it possible that what you are hearing is a beep when another person is
calling that line (Call waiting ?)
Also, If you don't mind me asking..
Why are you doing pots to sip conversion ? why not just a straight sip
trunk ? (i.e. sip origination )
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net
----- Original Message -----
> From: "Nate Burke" <n...@blastcomm.com>
> To: "Animal Farm" <af@afmug.com>
> Sent: Wednesday, May 20, 2015 5:24:44 PM
> Subject: [AFMUG] Voip analog handoff to PBX
>
> 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
>
>
