[Asterisk-Users] Bristuff and incoming call problems

[Peter Svensson]

On Fri, 4 Feb 2005, Remco Barende wrote:

> Very regularly asterisk seems to lose connectivity with the ISDN line. If 
> you try to call in you get the information tone that the number is not in 
> use. Outbound calls do stil work however. Unloading the modules and 
> reloading them and start/stop asterisk will solve the problem.

Can't help you there, we are PRI only.

> Another problem that occurs regularly : When you make an inbound call to 
> asterisk the calling party does not get the tone that the phone is ringing 
> on the receiving end. The line just seems completely dead untill the phone 
> is picked up and you can hear the other party. Is this an asterisk / 
> bristuff problem or something for the telco to sort out? Who should 
> generate the ringing signal to the calling party?

Depending on what country you are in, probably you. On isdn you have the 
option of providing audio to the reverse path (i.e. ringing, busy etc) 
before the call is set up. See the 'r' option to Dial(). Use this when 
placing a call to something which does not generate ringing toned by 
itself - i.e. isdn phones and some pbx:es.

Peter