teltek

There are likely several responses to your query. The first thing would be to advise on what PBX specifically and moreover what your ultimate goal is with respect to your project.

Usually you will have a standard 9-pin or 25-pin RS-232 connection that will communicate in either a terminal interface or a printer port.

For you qwik-ref, here are the pinouts for your convenience.

*note these are for direct PC to modem connections and the 'null' versions to these are the reversals at one end for PC to PC type communications; [TxD-RxD | DTR-DSR | RTS-CTS]

9pin RS232:

1=CD
2=TxD
3=RxD
4=DTR
5=SG
6=DSR
7=RTS
8=CTS
9=RI

25-pin
2=TxD
3=RxD
4=RTS
5=CTS
6=DTR
7=SG
8=CD
20=DSR
22=RI

Please update your post with a few more specifics, if you may.

I hope this helps you moving forward.

skysedan

Well I need to connect the PABX Telephone switch to the computer via 9-Pin serial port. The PABX that i have at the moment is a simple rather too simple one.
It is a simple chinese manufactured and there is no specific model, however I have got the user manual and the diagrams. If possible can i send u the diagrams so that u may guide me better for the connectivity.
Actually i am doing this as a final project. the purpose of this connectivity is to get the call details and store them in a database
Kindly guide me further.

skysedan

Finally i have come across the model of the PBX that I intend to use. It is a chinese manufactured TC 2000A. I have attached a copy of the manual kindly guide me how to connect this via 9 pin serial port to the computer.

Thanks

teltek

After careful review it appears your TC 2000A DOES NOT have this capability embedded into the unit. You have no option but to use an external logging device and this is capable by obtaining an external line interface device.

If you go to eBay and search on "mitel smart dial" you will discover many 1 to 4 line units available. You will want ones with "chaining" if you have more than 4 lines. IF you have 4 or less then you should choose one that has as many or more.

With this unit you can connect a standard 25-pin to 9-pin modem cable to your PC. By configuring this unit correctly, you can have every call placed and/or received through the device printed over this rs-232 port.

You will need to run a terminal session and enable text capturing. I recommend Procomm Plus from symantec.com. With a little ingenuity you can ensure automated startup/capture/ and auto-logging of the rs-232 data stream from the Mitel Smart-1 Dialer.


I hope this helps and happy hunting.

rixride

Teltek, thanks for the detailed response to this this, Skysedan, did this help you?

skysedan

Hi....

I am not using the Chineese PBX anymore, now I am using a Panasonic KX-616. If any one can guide me about that please let me know..

sncsnc

buy a radio shack modem cable 25 to 9 pin and a null modem adapter and set up a hyperterminal profile
1200 Mark,7,1 and flow control = none and your off and running!