Nortel Networks BCM1000 manual Replacing telephones with different models

Chapter 20 Moving and replacing telephones 231

Replacing telephones with different models

If you disconnect a digital or analog telephone and connect a new telephone of a different type into the same jack, for example, replacing an T7310 telephone with a T7316E, the new telephone keeps the old extension number but does not retain the user parameters. The new telephone receives a default profile for a telephone of its type. Refer to the Business Communications Manager Programming Operations Guide for telephone configuration information.

If the new telephone has fewer lines than the old one, automatic outgoing line selection cannot work with the Handsfree/Mute feature. You must select a line manually.

Note: If you replace a digital telephone with an IP telephone, or vice versa, programming is lost because the connection method is different. You can assign the same DN, but this causes programming issues by making the DN numbers incongruous for the DN range supported by the module to which the digital telephone was wired. This is only an issue if you rewire that module port to another location and install a digital telephone at the new location. There is a potential DN conflict between the IP telephone and the new digital telephone in these circumstances.

Refer to the IP Telephony Configuration Guide for directions about installing an IP telephone.

Status of the replaced telephone

The replaced telephone loses its programming and internal number. If the telephone is plugged in again at another jack, the Business Communications Manager considers the replaced telephone a new telephone.

Installation and Maintenance Guide