TTY pinout

DigitalG · Aug 19, 2005

Hi guys, i need to get the tty port to the customer desk.Its an option 11.
I need a null modem, 1 db25 to rj45 in the riser and i paas the signal into a cat 5 cable. In the office i need to convert the rj45 to a DB9 male connector.The thing is that i dont have the pinout for the db9 connector.Can somebody help me ?

Have a great week end!

Digital G

tr0n · Aug 19, 2005

How about here?

http://www.arcelect.com/rs232.htm

Hope that's what you were looking for.

ArchTelecom · Aug 19, 2005

Nice site tr0n.

jhayman · Aug 19, 2005

I do this all the time. Here's the pinout you'll need. It's not standard like most meridian stuff.

The DB9 ports for the SDI ports use "RS232 standards" for signaling, however the pinout is not standard DB9 and requires the use of Northern's cable to get a standard pinout on a DB25. Below is the wiring pinout to get from Northern's DB9 to a standard DB25.

DB9             DB25
Pin 1           Pin 8
Pin 2           Pin 2
Pin 3           Pin 7
Pin 4           Pin 4
Pin 6           Pin 3
Pin 7           Pin 20
Pin 8           Pin 6
Pin 9           Pin 5

Below is the pinout from Northern's DB9 to a standard DB9

DB9             DB9
Pin 1           Pin 1
Pin 2           Pin 3
Pin 3           Pin 5
Pin 4           Pin 7
Pin 6           Pin 2
Pin 7           Pin 4
Pin 8           Pin 6
Pin 9           Pin 8

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TTY pinout

DigitalG

Technical User

tr0n

ISP

ArchTelecom

IS-IT--Management

jhayman

IS-IT--Management

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