Lucent Technologies DEFINITY EXTENDER 1100 - Manual (Page 83)

Glossary
Issue 1 June 1998 GL-5
9 Position Non-Synchronous Interface Between Data Terminal
Equipment and Data Circuit-Terminating Equipment Employing Serial
Binary Data InterchangeANS/EIA/TIA-574-90)
(Sept., 1990)
S
Switch Module
The DEFINITY Extender 1100 System that connects to the DEFINITY
PBX.