The inbound callers number to a phone with call forwarding or EC500 activated is used as the outbound caller ID. If a customer calls my office phone which is call forwarded to my cellular device, the customers number is used as outbound caller ID. I cannot override the calling party's number using the public-unknown-number table. I also have the option "SA8983 - Replace CPN when calls forwarded off-net" set to on but am still unable to override. Our teleco vendor, Verizon, must recognize the outbound number or the call is rejected. I was told there are options in the SIP envirnment but we are not SIP. We are at Communication Manager 6. Is there a different option to force the caller ID override?