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Introduction & Specifications
A Terminal Server Application
SC-ADT device can be connected to up to 8, 16 or 32 ports of local asynchronous customer
equipment. Each SC-ADT front panel port is a standard EIA-232 async interface that can be
configured as terminal server ports for the management of remote equipment through their craft
ports. To support more async ports, simply add more SC-ADT units to the ethernet segment at each
site as required. Craft equipment attached to the SC-ADT can be managed from anywhere in the
customer's network via Ethernet LAN or modem dial-in access. The SC-ADT device itself is only
required at craft device sites.
connection to Craft Devices A, B, C and D, respectively.
Telnet and Dial-in Access
•
Telnet users have authenticated access via LAN or modem to any SC-ADT async port, or can
select any connected device from a convenient port menu.
•
Dial-in users employ the SC-ADT internal modems (if so equipped) or one of two external
modems over the PSTN. The external modems use async Port 1 or Port 2. The integral modems
use the modem/line RJ45 connector at the shelf/enclosure rear panel.
•
Dial-in users connect to SC-ADT in Terminal Emulation mode using applications like
HyperTerminal or in Dial-up Networking mode for standard IP access. Multiple dial-in users
may establish simultaneous management sessions to separate ports, and can access one terminal
server port after another without having to disconnect and redial the modem connection.
Note
If there is a LAN connection at the SC-ADT site, several users may Telnet simultaneously over the LAN to
additional craft devices as long as they are connecting to different ports.
USER "A"
REMOTE TELNET
Access
ROUTER
or SCIP
USER "B"
DIAL-UP
Access to any
SC-ADTsite
with modem.
USER "D"
DIAL-UP
Access to any
SC-ADTsite
with modem.
Figure 1-3
076R172-000
Issue 6
Figure 1-3
SC-ADT SITE
ROUTER
or SCIP
IP
NETWORK
C
PSTN
Craft
Device
D
Craft
Device
Terminal Server Applications via Telnet, Dial-Up and IP Access
SpectraComm ADT
Installation and Operation Manual
SC-ADT Applications Overview
shows Users A, B, C and D making a Telnet or Dial-Up
USER "C"
LOCAL TELNET
Access
Authenticated
access via LAN to
SC-ADT-conected
craft devices.
LAN
General
DataComm
TermServ
Ports 9 - 16
Port 9
Port 10
SC-ADT 16-port
shown with two
internal modems.
TermServ
Ports 3 - 8
A
Port 3
Craft
Device
B
Craft
Device
Port 4
(Ports 1,2 used by internal modems)
1-9
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