Specifications

Table Of Contents
The Modular Trunk Data Module (MTDM)
Issue 11 December 1999
21-75
Send Data
Receive Data
Other Physical Features
Mounting Options
The MTDM can be configured either in a stand-alone or a multiple mounted
version. The stand-alone version is contained in a 70A Data Mounting aluminum
housing that is equipped with plastic front and rear covers. A maximum of eight
MTDMs may be installed in the 71A Data Mounting.
The stand-alone version can be mounted on a surface or desk top near the
associated data equipment. The multiple-mounting carrier unit is normally
installed in an auxiliary cabinet.
Capabilities
The MTDM offers the following features and capabilities:
Selected rates up to 64 kbps
Asynchronous rates up to 19.2 kbps
Synchronous operation at 56 kbps and 64 kbps
Full- or half-duplex operation up to 56 kbps
Full-duplex at 64 kbps
Self-test
Automatic answer
Private line and switched modes
Power
Both mounting arrangements require power from a 115-volt AC receptacle to
power the MTDM.
MTDM Equipment PECs
The MTDM can be ordered using the following PECs:
MTDM 2162TDM
RS232C Interface card 21621
Stand-alone housing 21702
71A Multiple mount 21711