On Fri, 12 May 2006, Dave Morrow <[EMAIL PROTECTED]> wrote
Hi all.  I was reading a sample config someone had posted relating to
call forwarding, and in it, they use a Dial command with components
that I cannot find any reference to.
 
Can someone point me to a reference which could explain the difference
between Dial(SIP/100|20|Ttr,,wW) and Dial(SIP/100,,wW)
Specifically, what is the |20|Ttr ?  I cannot seem to find any
reference which would indicate this is even a valid format for the SIP
channel.

Well to my inexpert eye it looks wrong. Are you sure about the those stray commas in the first example?

Arguments can be separated by either a comma (,) or a pipe (|). So in your first you are dialling the SIP/100 with a 20 seconds timeout. What's left I think should be TtrwW, not Ttr,,wW. These are the 'options' and are as listed at http://www.voip-info.org/wiki-Asterisk+cmd+Dial. So if you loose those rogue commas, the answer to your "what's the difference" question is a specific time out value, the ability for both parties to perform transfers and a ringing tone.
--
Chris Hastie
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