ITU X.21 V11 CABLE PINOUT SPECIFICATIONS

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Aug 25th, 2009
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please can someone help me with the pinout settings for DB9F-DB15M DB9M-DB15F for 3825 series routers,please i urgently need help

also once the serial cable is plugged in.it changes from up.up to up-down after staying a while.what is the solution

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slmansfield Tue, 08/25/2009 - 11:01
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Here is a URL that gives many of the pinouts for the cables used by the modular access routers. Hopefully it includes the cables you are asking about.


If the serial interface shows up/down it is getting carrier but the protocol is down. If it has never been up I'd check with your carrier to ensure that the circuit is configured correctly and that your router configuration matches what the carrier has configured.

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