asterisk users - May 2004 - dialing a remote phone system and then entering an extension

I am trying to get a way to have * forward calls that are dialed to an
extension, to end up at an extension on my old analog phone system.
I will have 7 lines coming into * using the new Digium cards via PSTN,
and then lines coming from * into the PSTN lines on the analog system.
So that if for example someone dials extension 110:

The system will call the analog system, the system will assume that a
call is coming from the telco as always, pick up right away, and then
listen for an extension to be entered. This should then connect the
incoming call to the extension on the analog system.

My question is, does my logic work, and also if I use the dial command,
and I set the analog system to pick up immediately, will wait long
enough before it dials? If that wouldn't work is there a way that I can
tell * to dial then wait and then send digits?

Thanks
 
Joel Duffield
Near North Business Machines
www.NearNorthBusiness.com

On Mon, 3 May 2004, Joel Duffield waxed:
> I am trying to get a way to have * forward calls that are dialed to an
> extension, to end up at an extension on my old analog phone system.
> I will have 7 lines coming into * using the new Digium cards via PSTN,
> and then lines coming from * into the PSTN lines on the analog system.
> So that if for example someone dials extension 110:
> 
> The system will call the analog system, the system will assume that a
> call is coming from the telco as always, pick up right away, and then
> listen for an extension to be entered. This should then connect the
> incoming call to the extension on the analog system.
> 
> My question is, does my logic work, and also if I use the dial command,
> and I set the analog system to pick up immediately, will wait long
> enough before it dials? If that wouldn't work is there a way that I can
> tell * to dial then wait and then send digits?
So, the legacy PBX already provides an analogue to *'s
Background app, ie., you dial in and it sits to wait for the
entered extension ?  Then you might as well just bridge it
right through *

    exten => s,1,Dial(Zap/g1/legacy_background_extension)

Since the Dial app isn't eating the DTMF, it should just
pass thru to the legacy PBX.

If, however, you want to use * to do the Background, then
dial that extension on the legacy PBX:

    exten => 110,1,Dial(Zap/g1/110)

Probably a better option because it gets you migrating to *
quicker.  And I assume you are upgrading.

I don't think you need to worry about the wait, * handles
analog interfaces and this is a requirement of such an
interface.  Meaning it won't send audio while on hook, but
wait for an answer.  There's even support for pulse dialing
in *, if it is that much of a legacy PBX.

--Chris


-- 
Chris Maj, Rochester
cmaj_at_freedomcorpse_dot_com
Pronunciation Guide: Maj == May