E1 MAIN LINK (NETWORK) AND SUB-E1 PORT
Framing
256N (no MF, CCS)
256N (no MF, CCS) with CRC-4
256S (TS16 MF, CAS)
256S (TS16 MF CAS) with CRC-4
Bit Rate
2.048 Mbps
Line Code
AMI
Zero Suppression
HDB3
Impedance
120 ohm ,
balanced
75 ohm , unbalanced
Signal Level
Main link receive:
0 to -36 dB / with LTU
0 to -10 dB / without LTU
Main link transmit:
± 3V ( 10%), balanced
± 2.37V ( 10%),
unbalanced
Sub-E1 port receive:
0 to -10 dB
Sub-E1 port transmit:
± 3V ( 10%),
balanced
± 2.37V ( 10%),
unbalanced
Jitter Performance
As
per ITU G.823
ETSI TBR-12 and TBR-13
Connectors
RJ-48c 8-pin, balanced
Two BNC coaxial, unbalanced
Transmit Timing
Internal accuracy:
± 30 ppm
Loopback timing:
± 130 ppm
Sub-E1:
2.048 Mbps ± 130 ppm
(locked on E1 main link)
External timing from data port:
n x 56, n x 64
± 130 ppm
Compliance
ITU G.703, G.704, G.706, G.732
FIBER OPTIC LINK
Operating Wavelength
850, 1300 or 1550 nm (see
Orderin g)
Receiver Sensitivity
(For BER = 1x10
-9
)
-38 dBm at 850 nm
-40 dBm at 1300, 1550 nm
Connectors
ST, FC/PC or SC (see
Orderin g)
Output Power
-18 dBm for 850 nm into 62.5/125
-18 dBm for 1300 nm into 9/125
-12 dBm for 1300 and 1550 nm laser into 9/125
Dynamic Range
28 dB for all types of optical
interfaces
Budget (Max)
20 dB for 850 nm over 62.5/125
22 dB for 1300 nm over 9/125
28 dB for 1300 and 1550 nm laser over 9/125
DATA PORTS
Number of Data Ports
One or two (see
Orderin g)
Interface
V.35, RS-530, V.36/RS-449, X.21
Connectors
D-type 25-pin, female RS-530 pinout
Data Rate
n x 56 or n x 64 kbps, (n=1,2...,31)
Clock Modes
DCE: RX and TX clock to DTE
DTE1: RX clock to user device
TX clock from user device
DTE2: RX and TX from DCE
Control Signals
CTS
follows RTS or constantly ON, soft-selectable
DSR constantly ON, unless in test mode
DCD constantly ON, unless in LOC SYNC LOSS
ETHERNET BRIDGE PORT
LAN Table
10,000 addresses
Filtering and
Forwarding
15,000 pps
Buffer
256 frames
Delay
1 frame
Standard
Conforms to IEEE 802.3/Ethernet
Connectors
10BaseT (UTP): Shielded RJ-45
10Base2 (Coax): BNC
GENERAL
Diagnostics
Main E1 link:
local and remote loopback
Sub-E1 port:
local and remote loopback
Sub-E1 port BER test
Data port:
Local data port loopback
Remote data port loopback
Data port BER test
Inband code activated loopback per data port
Timeslot Allocation
Consecutive (bundled)
User defined
Performance Monitoring
(On E1 Main Link)
Local support of CRC-4
Statistics according to RFC-1406
Control Port (DCE)
Interface: V.24/RS-232
Connector: 9-pin D-type, female
Format: Asynchronous
Baud rate: 1.2 to 19.2 kbps,
autobaud
Character: 8 bit no parity, 7 bit
odd or even parity
Front panel control
LCD:
2 rows of 16 characters
Push-buttons:
Cursor, Scroll, Enter
Indicators
General: Test, Alarm
Main E1: Local sync loss, Remote sync
loss
Sub-E1: Local sync loss, Remote sync loss
All indicators are red.
Alarms
Last 100 alarms are stored and
available for retrieval. Each alarm is time stamped.
Alarm Relay
3 relay contacts are available on the
control DTE port. The alarm relay is activated by certain
alarms in the alarm buffer.
Physical
Height: 43.0 mm / 1.7 in
Width: 21.5 cm / 8.5 in
Depth: 24.3 cm / 9.5 in
Weight 1.3 kg / 2.9 lb
Power
100Œ240 VAC; 47Œ63 Hz
-48 VDC, nominal (36Œ72V)
Power consumption: 6W
Environment
Temperature: 0Œ50°C / 32Œ122°F
Humidity: up to 90%,
non condensing
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