E1 INTERFACE
Number of links
2 or 4
Compliance
ITU-T Rec. G.703, G.704; G.823
Data rate
2.048 Mbps (per link)
Line code
HDB3
Framing
With
CRC-4: Time slot 0
multiframe for CRC-4 protection, and no multiframe (G.732N),
intended for use with CCS.
Without
CRC-4: No multiframe
(G.732N), intended for use with CCS
Impedance
120 . ,
balanced
75 . ,
unbalanced
Signal level
Receive level:
0 to -34 dB with LTU
0 to -10 dB without LTU
Transmit pulse:
Balanced: ±3V (± 10%)
Unbalanced: ±2.37V (± 10%)
Jitter performance
As per ITU-T G.823
Connectors
8-pin RJ-45, for balanced
Two BNC coaxial for unbalanced
DATA PORT INTERFACE
Data rate (sync type only)
n x 1.920 Mbps (where n=1 to 4), up to 7.68
Mbps
Interfaces and connectors
V.35
with 34-pin connector
RS-530 with 25-pin connector
V.36/RS-449 with 37-pin connector (using RS-530 port, via
supplied conversion cable)
X.21 with 15-pin connector
HSSI with 50-pin SCSI-2 connector
IR-ETH (Ethernet Bridge): RJ-45
IR-ETH/QH (Ethernet/Fast Ethernet bridge): RJ-45
Note:
For specifications
of Ethernet interfaces, refer to Table 1.
SUPERVISORY PORT
Interface
V.24/RS-232, async
Connector
9-pin D-type, female
Speed
300-9600 bps, autobaud
GENERAL
Sync Data Port Timing
DCE or External-DCE
System Timing
Loopback (from any E1 link)
Internal (±32 ppm)
Station clock
E1
Differential Delay
Up to 64 msec
Station Clock
Bit rate: 2.048 Mbps
Line code: AMI or HDB3
Impedance: 120 .
Connector: 8-pin
RJ-45
Format: Framed/Unframed all "1"s or G.703
compatible
Diagnostics
Local/remote loopbacks for data port and E1 links
Bert V.52, built-in
Statistics and Alarms
E1 CRC-4 diagnostics per ITU-T G.706
Alarm buffer size: 100 events
Alarm Response
Received impairment on E1
E1 response: Remote alarm
Indicators
E1 (per link): LOC SYNC LOSS, REM SYNC LOSS
Data port: TD, RD, TEST
Front Panel Control
LCD: 2 rows x 16 characters
Push-buttons: Cursor, Scroll, Enter
Power Supply
100 to 240 VAC, 18.5W
-48 VDC, 18.5W
Physical
Height: 4.4 cm / 1.7 in (1U)
Width: 43.2 cm / 17. in
Depth: 24.2 cm / 9.5 in
Weight: 2.3 kg / 5.0 lb
.
Environment
Temperature: 0-45 ° C
/ 32-113 ° F
Humidity: Up to 90%, non-condensing
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