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Multi-Function Module Feature

Considerations and Constraints

When both the MLX telephone and the device connected to an MFM are in use, the Voice Announce feature cannot be used to reach the MLX telephone. Voice Announce interferes with data calls made to a data workstation including an MFM.

The tip/ring or SAA interface is selected by setting pin straps in the MFM. Only authorized technicians can install or set options in the MFM.

When Ringing/Idle Line Preference is turned on for an MFM and Automatic Line Selection is set to an outside line/trunk, inside calls cannot be made and features cannot be used. Both inside and outside calls can be received.

Calls are sent independently to the MLX telephone and its associated MFM. The following features can be employed when a user wants calls to be received at both the MLX telephone and the device connected to an MFM:

• Cover buttons
• Shared SA buttons
• Buttons assigned the same outside lines
• Forward and Follow Me
• Transfer

An MFM can be assigned as a Calling Group delay announcement device or as a calls-in-queue alert for a Calling Group queue.

Features and tip/ring applications that require a switchhook flash for operation (such as Octel 100 Messaging) cannot be connected through an MFM because the system ignores the switchhook flash sent by the device.

Some answering machines have the built-in ability to disconnect when someone picks up a line the machine has already answered. However, when a Shared SA button or a shared Personal Line is assigned to the MFM, the device cannot detect when a line is picked up by the sharing user. Therefore, if such an answering machine is connected to the MFM, the machine does not automatically disconnect when someone picks up the shared lines that the machine has already answered. Similarly, if the MFM extension is a Primary Coverage receiver for the MLX telephone or has the MLX extension's calls forwarded to it, the machine does not automatically disconnect when the telephone user picks up a call.

When programming, you cannot select an MFM by slot and port (*[sspp]) or by logical ID (#[nnn]).

A digital data or video workstation with an MLX telephone must not include an MFM.

Topics
	Description
	Tip/Ring Interface Supplemental Alert Adapter Programming Requirements
	At a Glance
	Considerations & Constraints
	Mode Differences
	Telephone Differences
	Feature Interactions