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Community Member

serial,line status

what does

serial is up line is down

mean?

4 REPLIES

Re: serial,line status

Hi

This may be due to the problem with the link connected to the interface.

Better to get the loop checked from your local telco..

regds

Community Member

Re: serial,line status

then if both are down?

Community Member

Re: serial,line status

Try this one...

he router is not sensing a CD(carrier detect) signal (that is, the CD is not active)....in this case..Check the LEDs on the CSU/DSU to see whether the CD is active, or insert a breakout box on the line to check for the CD signal.

A telephone company problem has occurred?line is down or is not connected to CSU/DSU....in this case .....Verify that you are using the proper cable and interface (see your hardware installation documentation).

Cabling is faulty or incorrect...in this case ...Insert a breakout box and check all control leads. Contact your leased-line or other carrier service to see whether there is a problem.

Hardware failure has occurred (CSU/DSU)...in this case ...Swap faulty parts. If you suspect faulty router hardware, change the serial line to another port. If the connection comes up, the previously connected interface has a problem.

Regards,

s.mahesvaran

Re: serial,line status

hi

if both are down then its time to check your local things like the cable,modem/converter or even try swapping the port.

regds

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