aculab Prosody X Installatiehandleiding - Pagina 11
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Pagina afdrukken1.6.1 Cable pin-outs
120 Ohm E1 or 100 Ohm T1
The 8-contact RJ45 Plug on the cable between each E1/T1 trunk and the 100 or 120
Ohm network trunk must be wired as follows:
100Base-T / 1000Base-T (Prosody X IP communication)
The 8-contact RJ45 Plug on the cable between the card and a 100Base-T /
1000Base-T network must be wired as follows:
Cat 6 cabling is recommended for 1000Base-T Ethernet connections. All eight wires
are normally populated on off the shelf Ethernet patch cables.
Connector orientation
Cat 5 cabling is recommended for 120 and 100 Ohm trunk connections.
1.6.2 75 Ohm E1 trunk connection
Each E1 trunk in a Prosody X 1U HA chassis has configurable impedance.
Some legacy E1 PSTN networks require 75 Ohm trunk connection. The default
impedance for E1 trunks in the Prosody X 1U HA chassis is 120 Ohm. It is important
to confirm with the network operator which impedance the PSTN is using during the
installation process, as a mismatch can lead to signal degradation and erratic
equipment behaviour that is difficult to diagnose later.
The following signalling services may be expected to be configured for 75 Ohm in
Pin
Signal
1
Rx+
Input to chassis
2
Rx-
Input to chassis
4
Tx+
Output from chassis
5
Tx-
Output from chassis
Pin
Signal
1
A+
2
A-
3
B+
4
C+
5
C-
6
B-
7
D+
8
D-
8 7 6 5 4 3 2 1
RJ45 (US RJ48) Plug
Front View
Figure 1-6 RJ45 pin numbering
NOTE
Direction
Direction
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Prosody X Installation guide
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