363-206-285
Technical Specifications
10-16 Issue 3 June 2001
Transmultiplexer (BBG20) 10
â– Electrical Specification
The DS3 Transmux interface transmits/receives a standard electrical DS3
signal as specified in
ANSI
T1.102-1993, Section 5 [44.736 Mb/s rate,
DSX-3 interconnect specification, bipolar 3-zero substitution (B3ZS)
encoding].
Line buildout is provisionable as follows:
— 734A/D: 0 to 450 ft.
— 735A: 0 to 250 ft.
â– Format Specification
The DS3 Transmux interface provides termination for DS3 signals in both
M13 and C-bit parity formats.
â– Alarm Thresholding
The following parameters are monitored at the DS3 interface from the
DSX-3:
— Loss of signal (LOS)
— Out Of Frame (OOF)
—AIS
— BER (based on P-bit or C-bit parity)
The alarm level for each of the monitored parameters can be provisioned to
CR, MJ, MN, or status. Coding violation failure threshold is user settable to
10
-3
or 10
-6
BER.
â– Loopback
— DS1 and DS3 terminal and facility loopback
â– DS3 Line and Path (from DSX-3) Performance Monitoring (see
Table 10-23)
— DS3 parity errors (P-Bits, F&M Bits, C-bits) (CV-P)
— Severely Errored Frame Seconds (SEFS)
— Errored Seconds (ES-P)
— Severely Errored Seconds (SES-P)
— Unavailable Seconds (UAS-P)
— Code Violations Line (CV-L)
— Errored Seconds Line (ES-L)
— Severely Errored Seconds Line (SES-L)
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