22
3Com VCX V7122/SIP VoIP Gateway User Manual
Installation
To install the VCX V7122, follow these steps:
1
Insert the VCX V7122/SIP into the 19-inch rack and fasten the left-hand and right-hand
brackets to the vertical tracks of the 19-inch rack, using standard 19-inch rack bolts (not
provided).
2
Using 110/240 VAC power supply, attach a certified 110/240 VAC single or dual power
cable to the rear AC socket(s) and connect to the correct AC power supply.
When the optional DC power supply is used, the Gateway is equipped with a DC power
inlet (type MSTB2.5/2-STF of Phoenix Contact). Use #14-16 AWG cables for the DC
connection. The DC input is floating and the maximum input current is 4 amps.
3
When using the VCX V7122/SIP E1/T1 Gateway with 50-pin Telco connectors for trunk
I/O, connect the E1/T1 cables to the VCX V7122/SIP Gateway E1/T1 interfaces on the
rear I/O panel. These are two 50-pin female Telco connectors (DDK 57AE-40500-21D)
labeled Trunks 1-8 and Trunks 9-16 on the rear I/O module shown in
Figure 6
on page
21, and detailed in
Figure 7
. The pinout of the 50-pin connectors is shown in
Table 3
.
When using the VCX V7122/SIP E1/T1 Gateway with RJ-48c connectors for trunk I/O,
connect the E1/T1 cables to the VCX V7122/SIP E1/T1 interfaces on the rear I/O panel.
These are eight RJ-48c connectors labeled Trunks from 1 through 8 on the rear I/O
module shown in
Figure 12
on page 28. The RJ-48c connectors are wired according to
Figure 8
.
Figure 7
50-pin Female Telco Board-mounted Connector
1
25
26
50
Pin Numbers
Table 3
E1/T1 Connections on each 50-pin Telco Connector
E1/T1 Number
1 – 8
9 – 16
Tx Pins (Tip/Ring)
Rx Pins (Tip/Ring)
1 9 27/2
26/1
2 10 29/4
28/3
3 11 31/6
30/5
4 12 33/8
32/7
5 13 35/10
34/9
6 14 37/12
36/11
7 15 39/14
38/13
Summary of Contents for VCX V7122 SIP
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