[Asterisk-Users] TDM400P FXO channel hookstate always "Offhook" & outbound digits sent before provider dialtone

[Brian Capouch]

Rich Adamson wrote:
>>>>I have an Asterisk at Home 1.3 server (Asterisk 1.0.9) and recently added a
>>>>TDM400P with (1) FXO card on port 4. Inbound calls are always successful
>>>>but outbound calls fail 75% of the time with intercept messages from my
>>>>dial tone provider that include "we're sorry, your call did not go
>>>>through", and "we're sorry, when placing a local call it is now
>>>>necessary to dial an area code and the 7-digit number".
>>>>   
>>>>
>>>
>>>Add a "w" in the dial string within extensions.conf. The "w" adds a short
>>>delay before sending the dtmf to the telco, which is likely happening
>>>too fast for the telco switch.
>>> 
>>>
>>
>>Is that undocumented?
>>The wiki entry for the Dial() command says:
>>w: Allow the /called/ user to start recording after pressing *1 or what 
>>defined in features.conf (Asterisk > v1.0.x)
>>
>>To add a short delay to one of my remote FXO lines, I added A(silence/2) 
>>to the dial string.
> 
> 
> I don't recall seeing any changes come through for that, and "w" does add
> the delay before sending dtmf. Lots of folks use it, so I'd have to guess
> that either the 'show application dial' displays the help for w used in
> a different context. Embedded the "w" in the called number, and it will
> add about 200 milliseconds of delay. Multiple w's add more delay.
> 

I believe that the Dialplan option 'w' and the dial *string* meta-digit 
'w' are the source of confusion here.  They are distinct.

One of them is found in the string of "digits" to be dialed and causes a 
wait; the other one is found after the "|" that separates the dial 
target from the options to the command.

B.