Nortel Networks 3500, NTRN10AN manual Section data communication channel Sdcc

Hardware feature descriptions 3-79

Note: VT1.5 signal rate is supported on OPTera Metro 3500 shelves equipped with VTX-series circuit packs.

Protection of path failures on a single OC-3 optical interface circuit pack completes in 60 ms, but protection of simultaneous path failures on multiple OC-3 optical interface circuit packs complete in less than 200 ms.

Section data communication channel (SDCC)

An OC-3 line carries a DCC channel that can be edited, provisioned, and deprovisioned.

Note 1: The DS1 service module (DSM) connects to the OPTera Metro 3500 network element through the ports on a host OC-3 or OC-3x4 circuit pack.

Note 2: As of OPTera Metro Release 12, the default Section DCC provisioning for optical interfaces provisioned in the slots 3 through 10 will default to disabled. SDCC for the host OC-3 ports must be enabled, in order for autoprovisioning or manual provisioning of DSM to function.

Note 3: The maximum number of simultaneous SDCC-provisionable ports on an OPTera Metro 3500 shelf is 34 (the shelf must be equipped with eight unprotected OC-3x4 or OC-12x4 STS circuit packs in slots 3 through 10, and a protected pair of OC-48 or OC-192 circuit packs in slots 11 and 12).

Note 4: For Nortel Networks interworking and multi-vendor network scenarios, DCC interoperability can be achieved with the appropriate provisioning. See Optical Networks Data Communications Network Planning Guide, NTR710AM.

Alarm LED definitions

The following table provides a list of LEDs of the OC-3 optical interface circuit pack.

LED	Color	Description
Status (top)	Red	Circuit pack failure
	Yellow	Loss of signal
Status (bottom)	Green	In service and carrying traffic

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004