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Analog PBXs (Max™ FXO solution)
If your customer has an analog PBX with an available analog line card (SLIC/SLIB), the optimal Max solution is an FXO (Foreign
Exchange Operator) version. To connect an FXO version of the Max to an analog PBX, simply use RJ-11 cables to connect the
analog line card to the FXO ports on the Max. If only one FXO port on the Max is connected to the PBX, all of the users on the
PBX will be sharing this one line. If more lines are desired, simply connect multiple FXO ports to the PBX. Then, a hunt group
can be established so that the users are sharing multiple lines. The diagram below shows all the connections necessary to
operate an FXO version of the Max:
PSTN
Connects to SLIC
(SLIB or SLT) card,
1
FXS card or Station
card of PBX
1 2 3 4
5 6 7 8
1
2
3
4
5
6
7
8
AVU
1 2 3 4
5 6 7 8
1
2
3
4
5
6
7
8
AVU
5
PBX:
PBX
PBX
PSTN:
Telephone
Switch
SLIC/SLIB:
SLT:
1
2 3
4
5 6
7
8 9
8 #
*
Trunk /CO Line:
FXO
Port
BLK
MPU
E1/T1
LAN
SERIAL
Hub
2
or
Switch
4
3
2
1
Uplink
Power
Private Branch Exchange
Public Switched Telephone Network
Subscriber Line Interface Card/Board
Single Line Terminal or Telephone
(analog telephone)
Line from Central Office switch
OPR LTX STX
SYN LRX SRX
CONSOLE
PWR
AC 110-240V
3
17
1 PBX Connections
Connect the analog line card to the
FXO ports on the Max with RJ-11
cables.
2 LAN Ethernet Connections
To connect the Max to the LAN,
plug the RJ-45 LAN jack from the
hub or router into the LAN port on
the Max.
3 PC Connection
To initially configure the Max, you
must connect it to a PC. Use a 9-
pin RS-232C cable to connect the
PC's COM1 serial port to the Max
console. (Note: If there is an FXS
4
port also available on the Max, you
can configure it with a phone
connected to the Max and a PC on
the same network, as outlined
earlier)
4 AC Power Connection
Plug the Max into a power outlet.
Note: IVR functionality is
available with an FXO version of
the Max.
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