VoIP with a PBX, how to add prefix for outbound calls?

[pnanda]

Hi friends,

First I did a search to see if a similar question has been discussed, but didn't see any similar queries.

I have been able to register my E61i with my enterprise PBX. Now, I can dial employee extension over 'internet call' with access point being WLAN. No problem there.

But when I want to dial an outbound PSTN/Cell number that is in my contact list using the VoIP through our PBX, our PBX (and I am sure all PBXes that I know of) need a certain digit to be prefixed. In my case, it is '9' and the PBX is Avaya.
Currently I have no way to dial from my contact list because the VoIP client doesn't have that option for me to prefix the '9' to a 9-digit number. But all soft clients I have used before have that configurable option.

Can you please point me to where I can find this configuration option or any other way to solve this issue?

Appreciate any help in this matter.
thanks a lot
PN
San Jose, CA
Nokia E61i

[edikojsi]

this should be supported by the PBX, i.e. Avaya in your case, not by your Nokia
the PBX should be able to analyse the digits you have dialled and to ad a '9' in case of dialling external number