Setting a specific DID on outgoing calls depending on what Extension calls out on a single SIP line

[Albert Pizzarello]

Hi,

I have a sip provider and have multiple tel numbers assigned to the single sip line.
I want to send different Tel numbers depending on what extension is used to dial out. (all the numbers are registered to our SIP)
If under the General tab I change the Main trunk Number to one of the numbers, the person I call sees the different numbers, so I know the provider is sending out the different DID's.

The incoming works a treat so someone calling 12345 gets sent to extension 200, smsone calling 54321 gets send to 201

I'm stuck on the next step.

Any changes I do on the outbound parameters normally causes a sip line failure when dialing.

To recap. From extension 200 I want the person called to see 12345 and from extension 201 they should see 54321

Obv those numbers are just for example.

Any ideas ?
Thanks
Albert Pizzarello

 

[Albert Pizzarello]

Hi,

Just cracked it.

On each extension set Outbound Caller ID to the relevant Telephone number.
On the Sip line
P-Asserted Identity : User Part set to "OutboundCallerid" Caller ID taken from Extension Settings in Management Console"

Thanks anyway

 

[cobaltit]

Glad you figured it out. It would help if you mention the SIP provider as not all providers are the same and may require the outbound CID placed in a different field.