2.2
Cable Connection
2.2.1
RS-232C Cable Connection
To initialise a newly installed VoIP Gateway Card using the Maintenance Console Software
(see "3.2 Creating New Group and Gateway"), connect a PC or terminal directly to the card
using an RS-232C (cross) cable with DB9 female to DB9 female connectors.
1.
Turn the PC power OFF.
2.
Connect the RS-232C cable to one of the PC's COM ports (e.g., COM1).
3.
Connect the other end of the cable to the RS-232C port on the VoIP Gateway Card's front
panel.
RS-232C port on the VoIP Gateway Card
Circuit Type
RS-232C port on the VoIP Gateway Card
Circuit Type
RS-232C Cable (Cross Cable)
To COM port
Signal Name Pin No.
(EIA)
BB
RD (RXD)
BA
SD (TXD)
CD
ER (DTR)
AB
SG
CC
DR (DSR)
CA
RS (RTS)
CB
CS (CTS)
Signal Name Pin No.
(EIA)
BB
RD (RXD)
BA
SD (TXD)
CD
ER (DTR)
AB
SG
CC
DR (DSR)
CA
RS (RTS)
CB
CS (CTS)
To VoIP Gateway Card
RS-232C port
COM port on the PC (9 pin)
Pin No. Signal Name
2
2
3
3
4
4
5
5
6
6
7
7
8
8
COM port on the PC (25 pin)
Pin No.
2
1
3
3
4
2
5
20
6
7
7
5
8
6
4
2.2 Cable Connection
Circuit Type
(EIA)
RD (RXD)
BB
SD (TXD)
BA
ER (DTR)
CD
SG
AB
DR (DSR)
CC
RS (RTS)
CA
CS (CTS)
CB
Circuit Type
Signal Name
(EIA)
FG
AA
RD (RXD)
BB
SD (TXD)
BA
ER (DTR)
CD
SG
AB
CS (CTS)
CB
DR (DSR)
CC
RS (RTS)
CF
Getting Started
17