Verilink PRISM 3301 (34-00239.5) Product Manual - Manual (Page 15)

Front Panel Port Connections 7
Front Panel Port
Connections The PRISM 3301 contains a local access port and two BNC access jacks on the
front panel for monitoring and user interaction.
Local Access The local access port (located on the front panel) requires an RS-232, DB-9 male
connector to connect to an ASCII terminal or computer running a terminal
emulation software package at speeds of 1200, 2400, 4800, 9600, or 19,200 bps.
This port can be configured as dial-in/dial-out. The PRISM 3301 automatically
answers any incoming calls. If a value is entered into the Dial String field, it
attempts to place a call to the designated number. Once a connection is established,
the unit sends an ASCII alarm string containing the date, time, alarm description,
and application identification. If a connection is not established, the COA routine
continues for up to six attempts.
Monitor The two BNC access jacks labeled Tx and Rx on the front panel allow for
non-intrusive monitoring of the network signal.
Rear Panel Port
Connections The PRISM 3301 contains an AC-power receptacle, a grounding stud, a T3
network interface with backup unit connectors, a high-speed serial interface (HSSI)
DTE interface, and an RS-232 network management port with embedded SNMP.
Network The T3 network interface connects the PRISM 3301 to a T3 network. The backup
unit connectors allow the DS3 line to be switched to a backup unit in the event of
power outage, watchdog failure, or CPU self-test failure.
The primary connections require cables with 75
Ω
BNC connectors to the T3
facility. The secondary connections require cables with 75
Ω
BNC connectors to the
hot-standby unit.
DTE The High-speed Serial Interface (HSSI) port transmits data to and receives data
from DTE equipment at data rates of 3.16, 6.32, 12.63, 18.95, 25.26, 31.58, 37.70,
and 44.21 Mbps. The DTE port requires a cable with an Amplimite 50-pin male
connector. The pinout for the HSSI DTE interface is provided in Table 2-1.
O
N 1 2 3 4
USE ONLY WITH 250V FUSE
NETWORK
IN OUT IN OUT
PRIMARY SECONDARY PRIMARY
DTE
NETWORK
MGMT
(RS232)
CONTROL
SWITCH
ON
OFF
CAUTION:
TO PREVENT RISK OF
FIRE USE SAME TYPE\
RATING OF FUSE
110V, .5A
50/60HZ
GND
250V, 2A
Primary Power
Receptable
4-Pin
DIP Switch
RS-232
Serial Comm.
Interface with
Embedded SNMP
High-Speed
Serial Interface
(HSSI)
DTE Interface
To
Hot-Standby
Unit
T3 Network Interface
IN IN OUT OUT
Figure 2-3 PRISM 3301 Rear Panel