We are getting ready to deploy CUCM 6.1 for a customer and will be using the mobility feature so they can have their desk phone and cell phone ring simultaneously.
The customer's question is this:
User IP Phone DN - 1000
User Cell phone - (319) 555-2222
User Ext Mask - (319) 555-1000
PSTN inbound call - (319) 555-3333
An inbound call from (319) 555-3333 comes into DN 1000 which rings the IP phone and the cell phone. The user looks at his cell phone. Which caller ID will show up? Will it be the original caller's info or will it be the external mask of the phone/gateway. They are curious as to how to know if someone is calling their cell phone directly or if it is being routed via the mobility feature of CUCM.