M2000 Series Meridian Digital Telephones - Nortel Meridian 1 Manual

Page 78 of 144 Add-on modules
Table 17
RS-232-C signals and associated pin numbers for M2317 telephones
Circuit designation
EIA Common
AA
BA TXD
BB RXD
CA RTS
CB CTS
CC DSR
AB GND
CD DTR
CE RI

M2000 Series Meridian Digital Telephones

553-3001-215 Standard 12.00 January 2002
CCITT
101
103
104
105
106
107
102
108.2
125
Use the procedures in this section for adding hardware options to the M2006,
M2008/M2008HF, M2016S, M2616, and M2216ACD sets only.
CAUTION
Damage to Equipment
Use only the line cord provided with the M2000
Series Meridian Digital Telephone when installing
and removing options. The acceptable line cord is
A0346862.
Figure 27 on page 79 shows an exploded view for reference when
dismantling the telephone to get to its internal components. Some telephone
types are slightly smaller than the M2616 and do not have the center screw in
the base, but otherwise they are the same. The center screw may not be
required.
Pin
number
DTE
1
2 X
3
4 X
5
6
7 X
20 X
22
Signal source
DCE Name
X Frame ground
Transmit data
X Receive data
Request to send
X Clear to send
X Data set ready
Signal ground
Data terminal ready
X Ring indicator