[VoIP] Asterisk, Pulse dial and ZAP channel

[Russ Price]

John Novack wrote:
> Has everyone noticed that when Asterisk pulse dials a ZAP channel into 
> their EM switch, that there is a noticeable pause before the last digit 
> is dialed.
> 
> I find that somewhat curious.
> I also wonder if  this happens with DTMF dialing.

I think I've figured out what causes it - it is the echo cancelling.  I 
realized that I had "echocancel=no" on my TDM400P FXO ports; when I 
changed it, I started getting a pause before the last pulse digit.

	Russ
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