Modem Cables
Modem Cables
(OP)
can someone explain to me or point me to a site that has diagrams of the configuration for modem cables, I am having a problem finding two that are wired the same way but they all work on the machines or modems they were supplied with.
Is there not a universal method of wireing them?
Donald
Is there not a universal method of wireing them?
Donald
RE: Modem Cables
Matt Wray
CCNA
RE: Modem Cables
I tried to remain child-like, all I acheived was childish.
RE: Modem Cables
DB25-DB25
DB25-DB9
DB9-DB25
Pin outs - ie: what's what.
DB25 DB9 Signal Name Direction
1 protective gnd
2 3 TX Data DTE->DCE
3 2 Rx Data DCE->DTE
4 7 RTS DTE->DCE
5 8 CTS DCE->DTE
6 6 DSR DCE->DTE
7 5 Signal Ground (common)
8 1 DCD DCE->DTE
20 4 DTR DTE->DCE
22 9 RI DCE->DTE
23 DSRD DCE->DTE
Bottom LINE.
All that is absolutely required is TX, RX, and Sig Gnd(common). Everything else is gravy. All wires are straight through connections, WITH ONE EXCEPTION. TX AND RX MUST BE CROSSED. That is TX/RX pins 2/3 on DTE are RX/TX on DCE pins 3/2.
What's DTE and DCE mean. DTE is data terminal equipment (a pc or printer) DCE is data communication equipment (modem).
Hope this answers it all.