Appending a # sign to every calls to a ZAP trunk

[Richard \(Rogers @ work\)]

Hi all,

I have a ZAP trunk configured in trixbox 2.0 and it works great.
However, as this trunk requires every outgoing calls to be appeneded by a
'#' sign, I would like to see if I can simply change a conf setting
somewhere to hardcode this '#' in.  Preferably, I would like to have a 2
seconds delay followed by a #.  So, number + 2secs delay + #.

Any suggestion will be appreciated.

Thanks,
Richard