E1 line with packet drops

[saravanababu22]

An E1 card is configured for two channels, 256kbps and 128 kbps.

both lines are generating CRC and input errors with lot of packet drops. line is checked , all loop tests are fine, modems has been checked back to back. e1 card also has been changed, still problem persists.

[desai.jaideep]

Hi

(1)You have not given model no of the E1 card and the router in which they are used?

(2)Are the E1 cards working back-to-back?

Typically they should.

(3)Also check the jumper settings for the balanced and unbalanced PRI?

Pls revert back if any probs.

Regards

JD

PS:Pls rate the helpful posts.

[saravanababu22]

hi jd,

E1 is 1U-MFT, it supports only max of 2 channels.

modem used is atrie wirespan 5000.

E1 card and modem both are working fine.so where could i check this jumper settings.

its working setup, but crc should be cleared frequently, even then link goes down.

[arvenugopal]

hi

will you please check is there any menu settings instead of jumper. is there a manual provoded to you.

Regards

Venugopal

[Georg Pauwen]

Hello,

in addition to the other posts, you might want to check the clock settings on your E1, make sure it is set to ´clock source line´...

Regards,

GP

[saravanababu22]

clock setting is set as clock source line only.

still problem persists

regards

Babu

[desai.jaideep]

Hi

Are both the cards working back-to-back without CRCs?

As you are saying its a working link, can u post the configs and the show interface output?

Regards

JD