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Problem with serial line

evangimwa
Level 1
Level 1

‎10-21-2007 10:57 PM - edited ‎03-03-2019 07:16 PM

Hi,

I was doing what was supposed to be a simple serial line config for a client when i run into some snags.

My routers clocking has been stopped (i suspect by the modem). tried changing the modem to synchronous from async but with no success.

DTE V.24 (RS-232) clocks stopped.

the serial interface also shows the CTS and DSR are down. I had thought that once the DCD is up the rest should be up?

DCD=up DSR=down DTR=up RTS=up CTS=down

I also have many interface resets and carrier transitions which i am assuming is because there is no communication between the modem and the router. The prblem is the same on the other side of the line. The modem is a Zyxel U-336s. has anyone encountered a problem like this one?

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ilya.varlashkin
Level 3
Level 3

‎10-22-2007 02:35 AM

This looks like the modem can't sent to the line (DSR down). Check the line between the modems.

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