Vanguard Managed Solutions Vanguard 6500 PLUS - Manual (Page 92)

A-2 Cables
EIA 232-D Signals (Standalone, Modulus 8/18, and 9/21 Enclosures)
Pin DCE
Position
Function/Signal
Name
Pin DTE
Position
Function/Signal
Name
1 --------------- Shield/Frame Ground 1 --------------- Shield/Frame Ground
2 <------------- TXD 2 -------------> TXD
3 -------------> RXD 3 <------------- RXD
4 <------------- RTS 4 -------------> RTS
5 -------------> CTS 5 <------------- CTS
6 -------------> DSR 6 <------------- DSR
7 --------------- Signal Ground 7 --------------- Signal Ground
8--------------- DCD 8 <------------- DCD
14 <------------- DATA RESTRAINT 14 -------------> DATA RESTRAINT
15 -------------> TRANSMIT CLOCK
or V.54 Loop 3 * 15 <------------- TRANSMIT
CLOCK
16 -------------> STANDBY
INDICATOR 16 <------------- STANDBY
INDICATOR
17 -------------> RECEIVE CLOCK 17 <------------- RECEIVE CLOCK
18<------------- EXTERNAL
RECEIVE CLOCK 18-------------> EXTERNAL
RECEIVE CLOCK
or V.54 Loop 3 *
20 <------------- DTR 20 -------------> DTR
21 -------------> V.54 Loop 2 21 -------------> V.54 Loop 2
22 <-----------> RI/TM * 22 NC (No Connection)
24 <------------ EXTERNAL TRANS-
MIT CLOCK 24 -------------> EXTERNAL
TRANSMIT
CLOCK
25 <------------- TEST MODE 25 <------------- MAKE BUSY
* Pin assigned double function as follows:
Pin 15: Outputs TRANSMIT CLOCK if the port is configured for internal clocks. Otherwise it acts
as a V.54 Loop 3 signal when connected to a modem.
Pin 22: Used as the Ring Indicator output if the port is configured to emulate a dial modem. For this
to work properly, the RI/TM switch of the port must be set to RI. When the RI/TM switch is set to
TM, this pin acts as an input, and the TM output from the attached modem (pin 25 on the modem)
comes into the 6500 on this pin.