Configuration 3 - Lan To Lan - Multitech DataTalker DT101 Owner's Manual

DataTalker Owner's Manual

2.4 Configuration 3 - LAN to LAN

Configuration 3 is an example of a pair of DataTalkers providing the link between two LANs with
the added benefit of voice or fax traffic over the same composite link. Bridging the LANs over a
single high speed composite link expands the capacity of each LAN. The LAN bridge on each
LAN is provided by a router/bridge with a synchronous interface connected to the DataTalker's
data channel. The composite link could be an internal ISDN terminal adapter, an internal 56K
DSU, or one of a variety of external high speed link devices up to fractional T1 devices. The
additional feature provided by the DataTalkers is free voice or fax traffic without the need to
establish a separate voice connection between the two LANs.
Ethernet
Concentrator
Communications
LAN PC
Server
LAN PC
File Server
Router/Bridge
LAN PC
Printer Print Server
PSTN
LAN 1
Figure 2-3. LAN to LAN Configuration
In the configuration shown in Figure 2-3, the voice/fax channel 1 FXO port on the DataTalker at
LAN 1 is connected to a station card on the local PBX, and the voice/fax channel 1 FXS port on
the DataTalker at LAN 2 is connected to a telephone. On both ends, the data channel of the
DataTalker is connected to the router's synchronous port, and the router's Ethernet port is
connected to the Ethernet concentrator. An RJ-48 telephone cable connected to the composite
link at the DataTalker's DSU/TA DIGITAL connector links the DataTalker's internal DSU to the
public data network.
You must configure the DataTalkers before you connect them to the LANs. To configure a
DataTalker, place DIP switch position 3 in the down (closed) position and connect a command
port device such as a terminal or a PC to the DATA/COMMAND connector on the back of the
DataTalker. Turn on the DataTalker and PC and run your communications software in terminal
mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the
ENTER key to establish communications with DataTalker and bring up the Main Menu.
A series of configuration menus provides simple and complete configuration information for each
aspect of the DataTalker. From the Main Menu, you can configure the unit, display statistics,
reset various functions within the DataTalker, and run diagnostic tests:
Main Menu
1 - Configurations
2 - Statistics
3 - Reset Options
4 - Diagnostics
5 - Exit Command Mode
6 - QUICK SETUP
Selection : _
28
Composite Link
Sync Data
Channel
PDN
Data / Voice / Fax Concentrator
VOICE / FXS FXO E&M FAX XMT RCV XSG RSG RXT FCR RD TM V35 EXT MDM DSU TA
FAX 2 COMPOSITE LINK
DATA/ VOICE / STATUS 28.8 DTR DBUP OH
COMMAND XMT RCV FC COM ORIG FAX 1 FXS FXO E&M FAX XMT RCV XSG RSG 101 MDM/TA CD RCV XMT CTS 56 RTS NS OOS 2B
DataTalker
Voice/Fax
Channel
Trunk
Trunk
Trunk
Station
Station
PBX
Telephone
Ethernet
Concentrator
Sync Data
Channel
LAN PC
Router/Bridge
Data / Voice / Fax Concentrator
VOICE / FXS FXO E&M FAX XMT RCV XSG RSG RXT FCR RD TM V35 EXT MDM DSU TA
FAX 2 COMPOSITE
DATA/ VOICE / LINK STATUS 28.8 DTR DBUP OH
COMMAND XMT RCV FC COM ORIG FAX 1 FXS FXO E&M FAX XMT RCV XSG RSG 101 MDM/TA CD RCV XMT CTS 56 RTS NS OOS 2B
DataTalker
LAN PC
Communications
Voice/Fax
Server
Channel
LAN PC
File Server
Telephone
Print Server Printer
LAN 2