648 System

My DID range is 4300-4499

A new tenant will be moving in and want to port the number ending in 3339. My phone company will NOT send DNIS as a policy.

When I look at the Y>A screen, I have DID Digits that start at 300 and go through 999. DID 339 is already assigned to an active extension.

What am I to do? The phone company siad they could create a "market Expansion Line" that would forward the 3339 number to a different number at the cost of $16+ per month. Is there something I can do within the switch? Can I force the phone company to send DNIS?

Thanks,
Magnus