Nortel Networks 553-3001-211 manual NT5K21 XMFC/MFE card, MFC signaling

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NT5K21 XMFC/MFE card

Contents

This section contains information on the following topics:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357

MFC signaling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357

MFE signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360

Sender and receiver mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364

Introduction

The XMFC/MFE (Extended Multi-frequency Compelled/Multi-frequency sender-receiver) card is used to set up calls between two trunks. Connections may be between a PBX and a Central Office or between two PBXs. When connection has been established, the XMFC/MFE card sends and receives pairs of frequencies and then drops out of the call.

The XMFC/MFE card can operate in systems using either A-law or µ-law companding by changing the setting in software.

You can install this card in any IPE slot.

MFC signaling

The MFC feature allows the system to use the CCITT MFC R2 or L1 signaling protocols.

Circuit Card Description and Installation