Verilink PRISM 3301 Download (CG) Configuration/Installation Guide User Manual
Txport 4001 dds csu/dsu, Configuration guide (chassis version)
Numbers programmed and stored in
4001 and transmitted to backup unit
by inband AT commands
Manual or automatic restoral to leased
Fits TxPORT 1051 chassis
1.72” W, 6.8” H, 10.5” D (unit)
17.2” W, 7” H, 10.5” D (chassis)
0° to 50°C (32° to 122°F)
-20° to 85°C (-4° to 185°F)
95% maximum (non-condensing)
AT&T TR 62310
AT&T TR 41450
Part 15 subpart B, Class A and Part 68
Status: The green LED lights when the unit is powered and operation is normal. The red LED lights if an alarm
exceeding thresholds is detected or for other unit failure.
TD: This green LED lights during a mark condition on the high-speed transmit data line.
RD: This green LED lights during a mark condition on the high-speed receive data line.
RTS: This green LED lights when the request-to-send signal is active.
CTS: This green LED lights when the clear-to-send signal is active.
DCD: This green LED lights when the data-carrier-detect signal is active.
DTR: This green LED lights when the data-terminal-ready signal is active.
DSR: This green LED lights when the data-set-ready signal is active.
Test Switch: This switch (FAR/LOC) is used for local testing. When in the FAR position, the unit sends five seconds
of the V.54 loop pattern, then switches to the 511 pattern. When transmitting a test pattern, the TEST LED is lit con-
tinuously. The ERR LED lights for one second when a bit error or sync loss on the returned data is detected. After the
FAR test has been completed, the ERR LED is Off for “passed” or On for “failed.” When in the center position, the
unit sends five seconds of V.54 loopdown code and then returns to its normal operating mode. When in the LOC posi-
tion, the unit performs a network LLB and the LOOP LEDs light.
Activity Indicators: This two small, recessed LEDs indicate supervisory and network manager port activity.
SUPV: This supervisory jack provides direct terminal access for controlling the unit. Refer to the pinout table below.
DBU Active: This yellow LED lights when the dial backup is active. It blinks when a dial backup connection is being
DBU: This 10-pin jack provides a sync or async interface for external dial backup equipment and also provides a con-
nection to the internal DBU, when installed.
LOS: This LED lights with a loss of signal from the DDS network.
OOS: This LED lights when an out-of-service code is detected.
LOOP: This LED lights continuously when the network interface is in a line loopback.
TST: This LED lights continuously whenever the BERT pattern generator is active, including during LOOP,
UNLOOP, and FAR test.
ERR: This LED lights when BERT pattern errors are detected. At the end of a FAR test, it indicates the results of the
test as long as the FAR/LOC switch remains in the FAR postion.
DDS-I conforming to TR 62310 and
Full Duplex, Point-to-Point, and
2.4, 4.8, 9.6, 19.2, 38.4, and 56 kbps
(64 kbps for LDM only)
Up to 45-dB loss
Network, DTE, Internal
Sync Data Rates:
2.4, 4.8, 9.6, 19.2, 38.4, 54, 56, 62,
and 64 kbps
Async Data Rates:
2.4, 4.8, 9.6, 19.2, 38.4, and 57.6 kbps
Adapts subrate data port speeds to 56-
or 64-kbps line rate
Up, 10, 30, or 60 seconds
DB-25 (PN 1051-2) or V.35 connec-
tor (PN 1051-3). Selection depends on
RS-232 or CCITT V.35
130 mA, 20 W, 73 BTU maximum
Front panel LEDs
Terminal interface on SUPV port
Telnet session or SNMP management
via TxPORT 8100A Site Controller
CSU, V.54 (receive and send) front
panel switch for loop activation
Four DIP switches, two slide switches
(Supervisory port to terminal interface)
8-pin modular (RS-232)
1.2, 2.4, 9.6, and 19.2 kbps
Terminal interface session Telnet ses-
sion via 8100A SNMP management
system via 8100A
RS-232, 10-pin modular
PSTN or ISDN (external) optional
14.4 modem (internal)
Information for backup unit is stored
in 4001 and transmitted to backup unit
by inband AT commands
DBU Port Pinout
Rx Clock Out
Tx Clock Out
SUPV Port Pinout
TxPORT 4001 DDS CSU/DSU
Configuration Guide (chassis version)
Front Panel Description