Currently running two POTS lines into an asterisk system. Analog and SIP on premises. Being in the sticks, the POTS service is abysmal for quality, especially in the rain. Recently, cable has become available with VOIP phone. The cost savings are attractive as it can replace several independent services for TV and internet (currently satellite). But, I cannot get much out of them, regarding how the phone service works. All I can get is I plug my existing phones and answering machines into the back of the "cable modem" and am good to go. I am hesitant to believe that I can simply plug my TDM400P (2fxo/2fxs) into these (ATA ?) jacks and call it good. Any insight? Am I better off ignoring their phone offering and setting myself up with an IAX or SIP provider? (and surplus-ing the card). I would end up needing more than their single line offering with a second line at $30/month (USD). Seems that might make more sense joe a.
At 06:01 AM 11/27/2007, you wrote:>I am hesitant to believe that I can simply plug my TDM400P >(2fxo/2fxs) into these (ATA ?) jacks and call it good. > >Any insight? Am I better off ignoring their phone offering and >setting myself up with an IAX or SIP provider? (and surplus-ing the >card). I would end up needing more than their single line offering >with a second line at $30/month (USD). Seems that might make more senseThat's what I use other than I have the 4 FXO TDM400 and it works just fine. What I got was a cable modem with 2 POTs jacks. They cut me free from the outside world at the box and plugged the modem into a wall jack and my Asterisk box. No apparent change in the working of anything. Ira
Yes, you would just plug the FXO ports directly into the cable modem and it would work. In my experience the cable media gateways (Arris and Motorola) are more robust than VoIP ATAs. They can provide polarity reversal on disconnect, can power a higher REN, and even have built-in batteries to keep the phones running when the power goes out (the battery only powers the phones, not the Internet connection). YMMV based on your local cable co's implementation.
>>> On 11/27/2007 at 12:26 PM, Ira <ira at extrasensory.com> wrote: > At 06:01 AM 11/27/2007, you wrote: > >>I am hesitant to believe that I can simply plug my TDM400P >>(2fxo/2fxs) into these (ATA ?) jacks and call it good. >> >>Any insight? Am I better off ignoring their phone offering and >>setting myself up with an IAX or SIP provider? (and surplus-ing the >>card). I would end up needing more than their single line offering >>with a second line at $30/month (USD). Seems that might make more sense >Thanks for both the replies. Hope springs eternal. joe a.