Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Cisco 878 No Carrier Detect LED

Hi

I have a SDSL G.DMT service with Zen. We have purchased an 878 and put a config on it with SDM but it refuses to show even a CD led when connected up to the phone line.

I've also followed the "PPP over ATM with NAT" configuration guide line by line that hasn't helped.

The SDSL does work and we are currently using a Speedtouch 605s.

Has anyone got a sample config for the controller which shows all the lines needed to get a carrier detect from a UK supplier.

Thanks

Joe

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: Cisco 878 No Carrier Detect LED

Hello

Maybe you can try changing the operating-mode.

The next lines are a basic config for SDSL in Belgium:

!

interface ATM0

dsl equipment-type CPE

dsl operating-mode GSHDSL symmetric annex B

dsl linerate auto

!

no shutdown

!

HTH

Fred

3 REPLIES
New Member

Re: Cisco 878 No Carrier Detect LED

Reasons could be hardware fault on the SHDSL port of the 878. Is it possible for you to test the 878 router on another SDSL line.An incompatibility issue between the Cisco 878 and the DSLAM used by the ISP.Refer URL

http://www.cisco.com/en/US/products/hw/routers/ps380/products_data_sheet0900aecd8028a976.html

New Member

Re: Cisco 878 No Carrier Detect LED

Hello

Maybe you can try changing the operating-mode.

The next lines are a basic config for SDSL in Belgium:

!

interface ATM0

dsl equipment-type CPE

dsl operating-mode GSHDSL symmetric annex B

dsl linerate auto

!

no shutdown

!

HTH

Fred

New Member

Re: Cisco 878 No Carrier Detect LED

Hi Fred,

Thanks for the reply, but I have now got it working.

Cheers,

Joe

479
Views
0
Helpful
3
Replies