On Wed, Jan 9, 2013 at 2:26 PM, Dean Yorke <[email protected]> wrote:
> I need to use my asterisk box to provide a PRI circuit to a Cisco platform > solution. so basically my asterisk box needs to become a PRI provider. > > My question is...... What hardware do I need and can anyone suggest any > specific configuration situations. > Building on John's answer, you'll need a T1/PRI card. I've used Digium cards in the past but I know lots of people like the Sangoma products. Rhino and several other companies also make Asterisk compatible hardware. If you only want one circuit, the single span card would be appropriate. Most people I know will recommend the on board echo cancellation. The Digium product code for single span with echo cancellation is 1TE121BF. John's advice on timing is great. That's one of those seemingly tiny details that can hang up an implementation. In my experience, there's usually some fiddling to be done with the protocol settings (Asterisk calls it 'switchtype'). You need a combination of settings on both sides of the circuit that match. The sticking point for me in the past has always been Caller Name and Calling Party Number. I've never connected to Cisco before but I've usually had luck Googling for configuration examples that have worked for others. "national" is the default switchtype and it's a good place to start. You also need a T1 crossover. You can buy one or DIY it, the pinouts are available on The Google. Good luck with your project, Dave
