C-14
Hardware Specifications
C.2.7 45 Mbps DS3 Module
The following specifications apply to network modules NM-2/DS3C and
NM-4/DS3C:
Description
Specification
Port Capacity
Two or four DS3 ports per module
Data Rate
44.736 Mbps
Output Buffer
13,312 cell capacity
Media
Coaxial
Max. Line Length
~450 ft
Connector
BNC
Line Encoding
B3ZS
Framing
C-bit parity or clear channel
Clock Accuracy
±
20 ppm
Timing
Primary and secondary 8kHz reference from
internal (default) or network
Loopbacks
Transmit and receive loopbacks
Impedance
75 ohms nominal
Statistics/Alarms
Line code violations (LCV), framing bit errors
(FER), P-bit and C-bit errors, header check
sequence (HCS) errors, cells received (RxCells),
cells transmitted (TxCells), signal/clock detec-
tion, and AIS indication
Compliance
ATM Forum DS3 UNI v3.1, ANSI/Bellcore
T1.102, T1.107, TR-TSY-000009
Содержание MMAC-Plus 9A000
Страница 1: ...MMAC Plus 9A000 SFCS 200BX SFCS 200WG and SFCS 1000 ATM SWITCH User s Guide...
Страница 2: ......
Страница 17: ...1 3 Introduction Figure 1 1 9A000 Switch Configuration...
Страница 22: ...1 8 Introduction...
Страница 26: ...2 4 Installing the 9A000...
Страница 50: ...3 24 Switch Hardware...
Страница 84: ...5 18 Hardware Maintenance Procedures...
Страница 157: ...C 31 Hardware Specifications...
Страница 158: ...C 32 Hardware Specifications...
Страница 180: ...g 22 GLOSSARY...