Specifications

AUSM Specification (4 Port)
Specifications B-25
AUSM Specification (4 Port)
Service Interface (T1)
Service Interface (E1)
Line Interface Connector: Miniature 15 pin female DB-15 (100 Ω)—(Use LM-DB15-4T1)
Line Rate: 1.544 Mbps ± 50 bps (T1)
Synchronization: Transmitter may be either loop-timed or Receiver or synchronized to
shelf (called normal mode)
Line Code: Bipolar 8 Zero Substitution (B8ZS) as specified in ANSI T1.408
(T1)
Line Framing: Extended Superframe Format (ESF 24 frame multiframe) as ANSI
T1.408
ESF Maintenance Functions: Bit-oriented alarm and loopback messages of ESF Data Link as per
ANSI T1.408
Input Jitter Tolerance: Per ATT TR 62411
Output Jitter Generation: Per ATT TR 62411 using normal mode synchronization.
Physical Layer Alarms: LOS, OOF, AIS, RAI
Physical Layer Performance
Stats:
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
Line Interface Connector: Miniature 15 pin female DB-15 (120 Ω)—(Use LM-DB15-4E1),
BNC (75 Ω)—(Use LM-BNC-4E1)
Line Rate: 2.048 Mbps ± 100 bps (E1)
Synchronization: Transmitter may be either loop-timed or Receiver or synchronized to
shelf (called normal mode)
Line Code: HDB3 (E1)
Line Framing: 16 frame Multiframe as in G.704
Input Jitter Tolerance: As specified in ITU G.823 for 2.048 Mbit/s
Output Jitter Generation: As specified in ITU G.823 for 2.048 Mbit/s
Physical Layer Alarms: LOS, OOF, AIS, RAI
Physical Layer Performance
Stats:
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS