This idea has been merged into another idea. To comment or vote on this idea, please visit ENTCOM-I-48 Show Original Callers Number in Caller ID when Transferring calls.
It would be useful to businesses with lots of locations where calls are forwarded and picked up by a central call center. The agent taking the call needs to know which number the customer called for the purposes of identifying customers approximate location and which location they are desiring service from. If the agent has to ask the customer what city and state they are located in the agent / business loses credibility with the customer.