Verilink PRISM 41TDM (34-00275.4) Product Manual - Manual (Page 20)

12 C HAPTER 2: I NSTALLATION
Dial Connection
In this mode, a modem is
connected to the SLIP port
allowing initiation of a
SLIP connection to the unit
from remote sites whenever
access is desired. Configure
the modem to ignore DTR,
enable auto answer, inhibit
command echo, and return
verbose result codes. Also,
when the unit has alarm
messages to transmit, it
dials out of the port using the telephone number programmed in the Management
Ports screen on page 48. When a connection is made, the unit outputs the ASCII
characters stored in its buffer. If a telephone number is not programmed, the unit
never dials out but a call can be dialed in. The IP connection must be changed to
the SLIP port in the TCP/IP screen on page 45. The SLIP and LAN port cannot
both be active at the same time. An RS-232 to modem cable connection
(9-1001-091-1) must be used.
SUPV The SUPV port is an 8-pin modular jacks (electrically RS-232) DCE port configured
for 8 bits, no parity, and 1 stop bit. The SUPV port bit rate can be set through the front
panel interface to 1200, 2400, 9600, or 19,200 bps. Figure 2-2 provides the direct
connection pinout. Figure 2-3 provides the dial connection pinout. See Appendix B,
Customer Service, for cable information. The Call On Alarm (COA) feature works
through the supervisory port only.
The unit firmware, as well as the COA feature on page 48, can be configured
through this port. This port can be accessed through either a direct VT100
connection or a dial-up connection via an AT command set compatible modem.
Configure the modem to ignore DTR, enable auto answer, inhibit command echo,
and return verbose result codes.
The modem hangs up if the unit is called and sent a break command before
receiving a connect message.
Network management is performed through the SUPV port as well as the LAN
port (page 10) and the SLIP port (page 11). The unit incorporates the full TCP/IP
stack, supports inbound Telnet, and has an embedded SNMP agent for trap
reporting or SNMP monitoring and management supporting the DDS specific and
TXPORT enterprise MIBs as listed in Appendix A.
DTR Out 1
RTS Out 2
Frame Gnd 3
Data Out 4
Data In 5
Signal Gnd 6
CTS In 7
DCD In 8
Modem (DCE) S UPV /S LIP Port
20 DTR
4
RTS
1 Frame Gnd
2 TXD
3 RXD
7 Signal Gnd
5 CTS
8 DCD
8-Pin Modular DB-25
Figure 2-3 Modem Connection Pinout Assignments
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