E1/T1 PDH INTERFACE
Number of Ports
8 E1, 21 E1, 8 T1, or 28 T1
Compatibility
ITU-T Rec. G.703, unframed
Nominal Data Rate
E1: 2.048 Mbps
T1: 1.554 Mbps
Line Code
E1: HDB3
T1: B8ZS
Impedance
E1: 120Ω balanced or
75Ω unbalanced
T1: 100Ω balanced
Maximum Line Attenuation
36 dB (LTU mode)
12 dB (DSU mode)
Timing
Source clock is recovered from the receive
signal coming from the remote E1/T1
side
Locked to the SDH/SONET interface clock
Connectors
8 E1, 8 T1: DB-44
21 E1, 28 T1: DB-62
E3/T3 PDH INTERFACE (OPTION)
Number of Ports
1
Compatibility
ITU-T Rec. G.703, unframed
Data Rate
E3: 34.368 Mbps
T3: 44.736
Mbps
Framing
Unframed
Line Code
E3: HDB3
T3: B3ZS
Line Impedance
75Ω
Connector
2 BNC female
Timing
Source clock is recovered from the receive
signal from the remote E3/T3 side
Locked to the SDH/SONET interface clock
MANAGEMENT PORTS
Control Port
Interface: V.24/RS-232
Connector: 9-pin D-type, female
Format: Asynchronous
Baud rate: 0.3–115.2 kbps
Selectable word format: 7 or 8 bits, no
parity, 7 bit odd or even parity
Out-of-Band Access
Single Ethernet port FCD-155E version:
NG ETH port
Other FCD-155E versions:
ETH 1 and ETH 2 ports (through
internal Ethernet switch)
INDICATORS
General
PWR (green) – Power
TST (yellow) – Test
MAJ ALM (red) – Major alarm
MIN ALM (red) – Minor alarm LOC SYNC
LOSS (red) – Local loss of synchronization
on the STM-1/OC-3 links
REM SYNC LOSS (red) – Remote loss of
synchronization on the STM-1/OC-3
links
ETH, MNG, GbE (per port)
LINK (green) – LAN link integrity
ACT (yellow) – LAN data activity
E1/T1 PDH Interface (per port)
LOS (red) – Link signal loss
AIS (red) – Alarm indication signal on link
E3/T3 PDH Interface
LOS (red) – E3/T3 link signal loss
STM-1/OC-3 Main Links
LOS (red) – STM-1/OC-3 link signal loss
ON LINE (green) – STM-1/OC-3 link is
active (indicator is on) or standby
(indicator is blinking)
Station Clock
ON (green) – Station clock port is
connected
LOS (red) – Station clock signal loss
GENERAL
Power
100 to 240 VAC ±10%, 50 to 60 Hz
-48 VDC (-40 to -72 VDC)
+24VDC
Power Consumption
30W
Alarms
Last 100 alarms are time stamped, stored,
and available for retrieval
Alarm Relay Port
Operation: normally open, normally
closed, using different pins
Connector: 9-pin, D-type, female
Physical
Height: 4.4 cm (1.7 in)
Width: 44.0 cm (17.3 in)
Depth: 25.4 cm (10.0 in)
Weight: 4.1 kg (9.0 lb)
Environment
Temperature: -10° to 60°C (14° to 140°F)
Humidity: Up to 90%, non-condensing
(184 Seiten)
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