3Com CM 4000 228 CM 4000 Installation and Operating Manual

Hardware Installation
2−28 CM 4000 Installation and Operating Manual
The Nexus router has two ports that can be used for connection to Jupiter: the “XCI” port and the “XCPU” port. Field reports
suggest that the XCI port be used if possible. The pinouts for both ports are shown below.
Figure 2−34. Cable for connecting CM 4000 to Nexus audio router XCI port.
1
6
R− 2
7
3
T−
8
4
9
5
R+
T−
to CM 4000
serial port to Nexus router XCI port
G Ground
R− Receive minus
R+ Receive plus
T+ Transmit plus
T− Transmit minus
DB9P
(male) DB9
= twisted pair
1
6
2
7
3
8
4
9
5
T+
R+
G
G
R−
T+
G
Figure 2−35. Cable for connecting CM 4000 to Nexus audio router XCPU port.
1
6
R− 2
7
3
T−
8
4
9
5
R−
T+
to CM 4000
serial port to Nexus router XCPU port
G Ground
R− Receive minus
R+ Receive plus
T+ Transmit plus
T− Transmit minus
DB9P
(male) DB9
= twisted pair
1
6
2
7
3
8
4
9
5
T+
R+
G
G
T−
R+