TelcoBridges Tmedia TMP800, Руководство по установке

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Equipment Connections
15
2.5 Connecting to the PSTN
The TMP800 features 8 modular 8-conductor RJ48 type jacks for connection to T1/E1/J1 lines. You will
need one cable for each (T1/E1/J1) interface on the TMP800. If you are making your own cables, refer
to Figure 2.8 on page 16 for crossover or straight cable wiring connections.
The termination impedance is set at 100 ohms for T1 lines and 120 ohms for E1 lines. It is possible to
connect an external balun in order to convert line impedances to 75 ohms.
Note
All ports may not be active. T1/E1/J1 ports are activated by software license; the number
of active ports depends on the licenses purchased.
To connect the TMP800 (RJ48 type) to the PSTN:
1. Start with port 1 located at the top and left-most position. Connect one cable between this port and
the T1/E1/J1 line (Figure 2.7 on page 15).
2. Repeat step 1, using the next available port.
Figure 2.7 8-Port Interface to the PSTN
ETH ETH
1 2
RS-232
3
1
8
7
6 5
4
3
2