[Asterisk-Users] DID on analog line

[Paul]

George Pajari wrote:

>
> On Thursday 13 October 2005 15:20, Apu Islam wrote:
>
>> Is DID on analog line possible ? ( my telco is qwest) . Just 
>> wondering if
>> there is any way to test it on anlog wcfxo cards.
>>  
>>
>
> Another approach is to use a CTPX or Exacom unit to convert the DID or 
> 2-Wire E&M signal into a signal appropriate for a Digium FXO port 
> (converting the DID signaling info into DTMF after Asterisk takes the 
> FXO port off-hook).
>
> See:
>    http://www.ctpx.com/html/vp_2000__product_series.html
> and
>    http://www.exacom.com/html/vertical_markets/did_solutions.htm
>
I used such convertors about 15 yrs ago with a dialogic D41 4 port ISA 
card. For software testing I used a panasonic 6x16 switch without the 
convertors. The way I would test DID handling is that I relaxed the 
timing during the test. I would dial an extension connected to the 
dialogic card and soon as it answered send 4 digits. To make this easier 
I got a phone with a lot of autodialer buttons.

Since Apu mentioned this is needed for a test I wonder if he can do that 
with DID's provided via SIP/IAX2? Last time I checked analog DID trunks 
were expensive both NRC and MRC.