Pub. 42004-541A
Hands-free VoIP Telephone Manual
Page 19 of 24
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-541A.docx
02/20
Power
Ground
The enclosure must be connected to earth ground.
1.
Install a #6 ring lug on the ground conductor.
2.
Secure it with the ground terminal located on the rear of the front panel (see Figure 8 and Figure 13).
Power-Over-Ethernet (PoE)
Connect power to the system as indicated in your PoE equipment manual.
Local Power
A separate, isolated, 24 to 48-volt dc power supply is required when PoE is not available (see Table 7 on
Page 24 for the recommended optional plug-in power supply) (required only if PoE is not available).
Connect the local 24–48 V dc power source to removable terminal block,
P5
. Connect the positive
conductor to the (+) terminal and the negative conductor to the (−) terminal of
P5
Table 3. Local Power Connection—P5
Pin
Label
Description
1
(+)
Positive
2
(−)
Negative
Network
Connect a category 5 or better UTP cable with an RJ45 connector from the LAN (Local Area Network) to
the Ethernet jack located on the VoIP PCBA.
I/O
Inputs
The telephones have four auxiliary inputs for customer use. Terminate these inputs on terminal block
P12
Table 4. Auxiliary Inputs—P12
Pin
Label
Function
1
IN4
Input 4
2
COM
Common
3
IN3
Input 3
4
COM
Common
5
IN2
Input 2
6
COM
Common
7
IN1
Input 1
8
COM
Common