Incoming SIP trunk to extension

[TellyMcTellyphone]

I've got a SIP trunk from an Avaya system into the 3cx system.

On the Avaya system you dial 11xxxx to have the call go through to the 3cx. Currently the trunk is just pointed at my handset (1234). What I want to do is send 11abcd to extension abcd. Ideally I don't want to make a new rule for every extension (there's about 300 of them) and every time I add a new extension I'd have to add new rules. Can I make a "pattern matching" rule which says "strip the first 2 digits and go to the extension that's left"?

Sorry for poor wording, I'm quite new to this.

 

[leejor]

To do this you'd have to use a Bridge trunk. You'd have to strip the 11 in the Avaya and just send the extension digits.
Read this article for more info...
https://www.3cx.com/docs/

 

[TellyMcTellyphone]

That sounds cool, I'll take a look.

Could I also do this with the call flow designer?

 

[JohnS_3CX]

Your system needs to know where to route the call, so calls arriving via a bridge with destination say 2000 will match with extension 2000 and make it ring.

Dialling 112000 on the other end while stripping the 1st two digits, should make a call arrive at 3CX with destination extension 2000 (when using a bridge - if using a trunk things change since trunks need a destination predefined)