Lucent Technologies DDM-2000 OC-12 User Manual

363-206-295
Technical Specifications
10-8 Issue 1 December 1997
— Line AIS
— B2 thresholding signal fail
— B2 thresholding signal degrade.
B2 signal degrade thresholds are user settable in the range from
10
-5
to 10
-9
BER.
■ Performance Monitoring (see Table 10-14)
— Section severely errored frame seconds (SEFS)
— Line parameter B2
— Laser bias current (21G/21G-U only)
— Transmit power (21G/21G-U only)
— Receive power.
IS-3 Interface (21D/21D-U OLIU)
10
■ Optical Specification
The 21D/21D-U OLIU is a short-reach optical interface used to
interconnect between the DDM-2000 OC-3 and OC-12 Multiplexers. The
nominal line rate is 155.520 Mb/s. The LED transmitter supplies an
NRZ-coded signal.
Table 10-4, Table 10-5, and Table 10-6 provide detailed specifications and
link budget information for the 21D/21D-U OLIU.
■ Alarm Thresholding
The following parameters are monitored at the OC-3 interface.
— LOS
— LOF
— LOP
— Line AIS
— B2 thresholding signal fail
— B2 thresholding signal degrade.
B2 signal degrade thresholds are user settable in the range from
10
-5
to 10
-9
BER.
■ Performance Monitoring (seeTable 10-14)
— Section SEFS
— B2 parameters.

Lucent Technologies DDM-2000 OC-12 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-12
Category	Multiplexer
Language	English