5ESS trouble getting the D Channel working

From: Tomasz Hadula

I've got the same problem with DM3 quad span boards with FP1. You might need to bring up D-Channel explicitly in your application. To do that:

For Springware:

You may use cc_SetDLinkState() for a board (span) or cc_SetChanState()/gc_SetChanState for each B-Channel explicitly to revive D-Channel (first function initiates Layer 2 SABME-UA-RR-RR sequence, the second one sends Layer 3 SERVICE messages)

For DM3:

Intel wants you to use gc_Extension() instead of cc_SetDLinkState. See:
http://resource.intel.com/telecom/support/releases/unix51/linux51fp1/Onldoc/htmlfiles/gcisdn/develo21.htm#1045097
(but I couldn't make it work...)

Sending SERVICE messages can be done still by sending gc_SetChanState(), but you need to set a special parameter in the fcd file to make it work.

When I was working with Springware boards, calling cc_SetDLinkState on Layer 1 alarm recovery helped.

Tomasz Hadula
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Received on Wed Dec 31 13:26:42 2003