T-Comfort Comfort Pro S, Руководство по монтажу и пусконаладке

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PBX Networking Types of Point-to-Point Connections
When applying the L1 clock of trunk lines, you can assume that the public network is “clock-aligned”. So, in
the above example, you can connect additional trunk lines to one of the PBXs.
Types of Point-to-Point Connections
There are different types of connection available for an point-to-point connection between two PBXs,
depending on the distance between them.
Direct Connection
This type of ISDN point-to-point connection joins the two systems directly to each other using a crossover
twisted-pair cable. An S
0
connection can be used for distances up to 1,000 metres. Normally one PBX is the
protocol master for all three layers, and the other PBX is the protocol slave for all three layers.
Direct connection
Use the RJ45 jacks on one of the external S
0
ports for an S
0
connection between two Comfort Pro Ss. You can
use the corresponding pressure terminals for S
0
ports on interface cards.
Wiring of a direct connection
N
Note: If you use an S
0
port on an interface card (pressure terminal) and an S
0
port with
an RJ45 jack for the direct connection, make sure you make the necessary changes to
the port assignment (see S0 Ports starting on page 43).
PBX 1
L1 master
L2 master
L3 master
PBX 2
L1 slave
L2 slave
L3 slave
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
PBX 1, S
0
ext
PBX 2, S
0
ext
(RJ-45 socket)