Customer has a MICS with 5.0 software with a PRI. All the phones that have DID numbers have the OLI programmed with the DID number. However, when making a call from the phone with DID the programmed OLI number does not display, all phones display the first DID number. Our area has enhanced 911 service and we need to send the appropriate DID number to the 911 center. What can be done to make this work? Thanks,