Planning: Task 1 — Planning the Installation
Issue 3 May 2002
2-7
Components in a Typical Configuration
This section describes some of the components depicted in Figure 2-3.
LAN Connection (RJ45)
The LAN Connection area of Figure 2-3 depicts two connection options for a
Telnet Management Client: Ethernet coaxial cable or Ethernet twisted pair.
■ Option 1 — Ethernet coaxial cable
Reading from right to left, the “Telnet management client” can be any PC
that has access to the MAPD (using Telnet, for example). The Telnet
management client is connected to a “LAN server,” which could be a CVCT
CVLAN Server or a Telephony Services adjunct (for DLG based
applications). Notice that the “LAN server” connects via Ethernet to a
“Balun,” which, in turn is connected to a 10BaseT twisted pair.(A Balun is
required for connecting a balanced line — coaxial — to an unbalanced line
— twisted pair.) The 10Base T, which is an “RJ45 connection” connects to
the Ethernet cable on the MAPD external assembly. In a CTI
implementation, arrangement A would be used for call control. It is
functionally equivalent to Option 2, the Ethernet twisted pair.
■ Option 2 — Ethernet Twisted Pair
Reading from right to left, the “Telnet management client” can be any PC
that has access to the MAPD (using Telnet, for example). The Telnet
management client is connected to a “LAN server,” which could be a CVCT
Telephony Server. The “LAN server” connects via 10BaseT (twisted pair) to
the Ethernet cable on the MAPD external assembly. In a CTI
implementation, arrangement B would be used for call control. It is
functionally equivalent to Option 1, the Ethenet coaxial cable.
10Base-T Hub Based LANs
A 10Base-T Hub based LAN is an Ethernet LAN that works on twisted pair wiring,
which resembles telephone cabling. 10Base-T Ethernet LANs work on home runs
in which the wire from each workstation snakes directly to the 10Base-T Hub
(similar to the wiring of a phone system). Advantages of 10BaseT LANs: if one
machine crashes, it does not bring down the whole network. 10Base-T Hubs often
come with sophisticated management software.
!
WARNING:
The 10Base-T Ethernet connection is only intended for use within a building.
To protect the system from lightning or other external disturbances, a router
or LAN device that provides voltage suppression should be used.
Link Integrity
Link integrity must be enabled on the port on which the MAPD is to be connected.
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