[asterisk-users] sequential Dial() commands

[Luki]

> exten => context,1,Dial( SIP/a at b.com)
> exten => context,2,Dial(SIP/b at c.com)
>
> Currently, if the first number doesn't answer, the session is closed.

Specify a time out. Without it * will not continue to priority 2 if
a at b.com is reachable but does not answer.

exten => context,1,Dial(SIP/a at b.com,20)
exten => context,2,Dial(SIP/b at c.com,20)