Lucent Technologies 5 manual System Adapters

MERLIN LEGEND Communications System Release 5.0	Issue 1
System Manager’s Guide 555-650-118	June 1997

3System Components

Adapters Page 3-33

You can add one or two DSSs to the MLX-20L or MLX-28D telephone to provide 150 (3 pages for each of 50 buttons) or 300 (3 pages for each of 50 buttons for each of 2 DSSs) of additional extension buttons. You cannot attach a DSS to an analog DLC; however, the MERLIN II System Display Console provides a built-in DSS, and Auto Dial buttons can be programmed on BIS phones for rapid access to extensions.

Keep these facts in mind if you need to work with DLCs:

■You can connect an analog DLC to an analog extension jack on either a 008 or a 408 analog multiline telephone module; an MLX DLC connects to a digital extension jack on a 008 MLX or a 408 GS/LS-MLX module.

■When you assign both DLCs and QCCs in Hybrid/PBX mode, the maximum combined number of system operator positions is eight; no more than four can be QCCs. You can assign a maximum of two DLCs per MLX or analog module.

■Only multiline telephones that are connected to the first and fifth extension jacks on MLX or analog modules can be assigned as DLCs. This includes DLCs assigned as calling group supervisors and Call Management System (CMS) supervisors. CMS must be connected to two extension jacks programmed to support analog DLCs.

■You can use an MLX-20L telephone set up as a DLC for system programming if you connect it to the first or fifth extension jack on the first MLX module and then designate that jack for system programming.

Adapters 3

This section describes the adapters that connect adjuncts to the system and to telephones. System adapters connect directly to the control unit; telephone adapters connect adjuncts to telephones.

System Adapters 3

Four system adapters connect directly to the control unit: a channel service unit (CSU), the Loop-Start Trunk Adapter, the PagePal™ paging access adapter, and the Universal Paging Access Module (UPAM).

A channel service unit (CSU) is the interface between the 100D module and the

Digital Signal 1 (DS1) T1 facility provided by the telephone company.

The Loop-Start Trunk Adapter, UPAM, and PagePal connect loudspeaker paging systems. The PagePac® Plus loudspeaker paging systems require no system adapter.

Installation and operation of these adapters, as well as planning for them, is handled by Lucent Technologies.