This is what the Feature Reference had to say:
Calling Party Name on Caller ID:
Release 7.0 continues to support Calling Party Number and adds a new functionality for Calling Party Name. By programming a button on the telephone or with a feature code through centralized programming, users are able to toggle
between displaying the caller’s telephone number or the caller’s name. In order to use this feature, users must subscribe to caller identification from their local exchange carrier (LEC).
Calling Party Name can be 15 characters in length for MLX telephones as well as for ETR and MLS telephones. Calling Party Name is not recorded on SMDR reports. In addition, neither Calling Party Name nor Calling Party Number are
displayed on analog multiline telephones. This feature requires loop-start (LS) trunks. The existing LS-ID delay feature must be programmed for each line, as well. This prevents Calling Party Number and Name information from being lost when a call is answered too quickly. Release 7.0 software also supports the Caller ID capability of the 408 GS/LS-ID MLX module. Although previously orderable, the Caller ID capability of this module could not be used until Release 7.0 software became available.
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If you don't want to upgrade the processor to Rls 7.0, you could use the 800GS/LS-ID Module instead. It was introduced with Rls 3.0. It supports 8 CO lines with CID.
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