asterisk users - Jan 2005 - Using Zyxel Analog Telephone adapter with a GSM gateway

Searching through wiki and google.
http://www.2n.cz/products/gsm_gateways/voip/voiceblue.html
but there are also other products on the market.
---

Wondering if its possible to connect as follows:

Extension -> Asterisk -> ZyxelAnalogTelephoneAdapter -> GSM gateway.

The best way would be to make the ZyxelAnalog.. to be a channel.
But I don't think that is doable.. or ?
----

So i checked with Dial command..  trying to use something like:

exten => 99,1,Dial(SIP/11,20,D($EXTEN),w=800ms)

; Dial option
;      'D([digits])'  -- Send DTMF digit string *after* called party has
answered
;             but before the bridge. (w=500ms sec pause)
 
Problem is, that the astrisk won't push the $EXTEN numbers. 
(or does it ? I can't hear anything :-| )


My console (verbose level 3):
 
  -- Executing Dial("SIP/03-031e",
"SIP/11|20|D(987654321)|w=200ms") in new stack
    -- Called 11
    -- SIP/11-1644 is ringing
    -- SIP/11-1644 answered SIP/03-031e
    -- Attempting native bridge of SIP/03-031e and SIP/11-1644
Jan 20 16:27:43 WARNING[10949]: chan_sip.c:1820 sip_write: Asked to transmit
frame type 64, while native formats is 4 (read/write = 4/4)
Jan 20 16:27:43 WARNING[10949]: chan_sip.c:1820 sip_write: Asked to transmit
frame type 64, while native formats is 4 (read/write = 4/4)
...and so on for 10 lines.. then I hang up.
  == Spawn extension (wx3trunk, 99, 1) exited non-zero on 'SIP/03-031e'

/ Stig Henning
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Stig Thune wrote:
> Searching through wiki and google.
> http://www.2n.cz/products/gsm_gateways/voip/voiceblue.html
> but there are also other products on the market.
> ---
>  
> Wondering if its possible to connect as follows:
>  
> Extension -> Asterisk -> ZyxelAnalogTelephoneAdapter -> GSM
gateway.
If I understand, you are doing.

Extension (VoIP) -> (VoIP) Asterisk (VoIP) -> (VoIP) Zyxtel (FXS) -> 
(FXS) GSM

Unless I've missed something, it seems that you are trying to plug a 
telephone adapter (Zyxtel) to another telephone adapter (FXS). FXS <-> 
FXS can't work. What you need is to plug in an FXO card in your * box so 
you can do:

Extension (VoIP) -> (VoIP) Asterisk (FXO) -> (FXS) GSM.

Or even simpler, you could grab a $100 sipura 3k and a $150-200 
"cellsocket" or "dock'n talk" device and you *should*
get a simple,
functional 1 channel VoIP GSM gateway for about $300 (plus the cost of 
the phone which is usually given away with subscription anyway). I've 
never tried it though...

In comparison, the voiceblue GSM gateway costs a hefty $2,500 for 4 
channels... so you can get about twice the channels for about the same 
price. Except you might have to hack around, which costs time :)

Cheers,
Jean-Michel.