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Page 388 of 504 Appendix C: Meridian Modular Telephones add-on modules installation
553-3001-367 Standard 3.00 August 2005
Use the following procedures to add the Meridian Communications Adapter
(MCA) or Meridian Programmable Data Adapter (MPDA) to the telephone
and to connect it to a terminal or personal computer.
See the Meridian Communications Adapter User Guide for more information
on MCA operation.
108.2 20 DTR 20 H X Data terminal ready
— 21 — 21 EE No connection
125 22 RI 22 J X Ring indicator
113B 23 SCTEB 23 W X Tran sign elemt time B
113A 24 SCTEA 24 U X Tran sign elemt time A
— 25 — 25 MM X **
Table 67
V.35 CCITT signals supported by the MCA (Part 2 of 2)
V.3 5
CCITT
MCA
DB-25
pin no.
Abbr.
Adaptor cable
Signal
Source
Description
DB-25
Pin No.
V.35
Pin No.
DTE MCA
Note: * Pin 1 is connected to the MCDS shelf frame.
** These leads are ignored by the MCA controller.