Mum Card - Aastra AXD Installation And Maintenance Manual

4.13.8

MUM card

4.13.8.1 Description
Voice/Fax multiplexer/demultiplexer card, used to multiplex/demultiplex several calls
between 2 sites of an M6500 network on:
• a call set up over the ISDN public network,
• a Transfix lease line at 64 or 128 kb/s
4.13.8.2 Functional description
The MUM card can be used in three different ways:
• as a single multiplexer (8 channels to 1) to a remote site through a lease line (type
Transfix),
• as a single multiplexer (7 channels to 1) to a remote site on the ISDN public network,
• as a double multiplexer (3 channels to 1) to two remote sites on the ISDN public
network.
AMT/PTD/PBX/0058/4/6/EN
Page 256 01/2011
Installation and Maintenance Manual - Aastra 5000
Description des sous-ensembles