Lucent Technologies FiberReach DDM-2000 User Manual

363-206-305
Technical Specifications
10-2
Issue 3 June 2000
Electrical Interfaces
10
The DDM-2000 OC-3 Multiplexer supports a DS1, DS1PM, DS3, and T1 Carrier
low-speed interfaces, and DS3 Data Services and HDSL interfaces.
DS1 Low-Speed (BBF1B)
10
■
Electrical Specification
The DS1 low-speed interface transmits and receives a standard electrical
DS1 signal as specified in
ANSI
T1.102-1993, Section 2 (1.544 Mb/s
nominal rate, DSX-1 interconnect specification). Line coding is
provisionable to alternate mark inversion (AMI) with or without bipolar
8-zero substitution (B8ZS). Line buildout is provisionable as follows:
— 613C (22 gauge): 30 to 655 ft.
— 1249-C (26 gauge) 30 to 450 ft.
■
Format Specification
The DS1 low-speed interface provides clear channel transport of any
DSX-1 compatible signal. There are no format constraints on this interface.
■
Alarm Thresholding
The following parameters are monitored at the DS1 interface:
— Loss of signal (LOS)
— Line coding violations (CV-L).
The alarm level for each of the monitored parameters can be provisioned to
critical (CR), major (MJ), minor (MN), or status. B8ZS and AMI coding
violation failure thresholds are user settable to 10
-3
, 10
-6
, 10
-7
, or
10
-8
bit error
ratio (BER).

Lucent Technologies FiberReach DDM-2000 Specifications

General

Brand	Lucent Technologies
Model	FiberReach DDM-2000
Category	Multiplexer
Language	English