Nortel Networks M3110 - Manual (Page 386)

Page 386 of 504 Appendix C: Meridian Modular Telephones add-on modules installation
553-3001-367 Standard 3.00 August 2005
Remove the two 14-pin jumper plugs or one 20-pin jumper plug inside the
MCA from the RS-232 socket(s) and install the V.35 socket.
Note: The female cable ordering code is A0408927. The male cable
ordering code is A0408928. The A0300752 and A0300753 cables are
still supported, unless used with applications similar to IBM front-end.
Modem pooling is not supported on the MCA.
When a call is connected between two MCAs, and power is removed from
one, the MCA does not release until the power is restored.
The MCA always remembers the most recent data parameters. In the case of
power failure, data settings do not have to be reset.
Figure 69
Block diagram of MCA and Modular telephone
∝
P
P
∝
Power Supply
+12V
-12V
+5V
+5V
RS-232-C
DTE I/F
EIA
Drivers
Receivers
MDAD
A64
MTDC
A44
D
L
C
Power supply
option card
553-AAA2136
I
S
D
L
C
or
Communications adapter Telephone CS 1000
/ Meridian 1