dial invalid often happens

OS: Elastix 1.0
Card: OpenVop A800P 8FXO
PSTN provider: Chunghwa Telecom

I dial, but often hear the Chunghwa telecom 's digital receptionist say that the number you dial is invalid, sometimes is ok.

if use sip trunk to call out, always OK!

maybe the signal that A800P sending is not OK to Chunghwa telecom's line.

You might have to pulse 0.5 sec or wait for dial tone before dial out.

Anyway , you can use ztmonitor to record the voice down during call out, and see the relationship of offhook, dialtone and dial number.

it's happened when I use desktopphone or softphone.

For softphone, just dial the number you want, and press "enter".

But still happened!!! what's a pity....