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Analog PBXs (Max™ FXS solution)
If your customer has an analog PBX with an available analog trunk card (ATC, COIC/COIB), an FXS (Foreign Exchange Station)
version of the Max can be used. To connect an FXS version of the Max to an analog PBX, simply use RJ-11 cables to connect
the analog line card to the FXS ports on the Max. If only one FXS 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 FXS 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 FXS version of the Max with an analog PBX:
CO Line
PSTN
Connects to COIC
(COIB or Trunk) card,
or FXO card of PBX
1
1
2
3
4
5
6
7
8
AVU
1
2
3
4
5
6
7
8
AVU
Analog
FXS Port
Telephone
1 2 3
4 5 6
7 8 9
* 8 #
COIC/COIB:
PBX:
PBX
Telephone
PSTN:
PBX
Switch
1 2 3
4 5 6
7 8 9
* 8 #
Trunk/CO Line: Line from Central
FXS Port
1 2 3 4
5 6 7 8
BLK
1 2 3 4
5 6 7 8
MPU
E1/T1
LAN
SERIAL
CONSOLE
Hub
2
or
Switch
5
4
3
2
1
Uplink
Power
Central Office
1 PBX Connections
Interface Card/Board
Connect the analog trunk card to the FXS ports
on the Max with RJ-11 cables.
Private Branch
Exchange
2 LAN Ethernet Connections
To connect the Max to the LAN, plug the RJ-45
Public Switched
LAN jack from the hub or router into the LAN
Telephone Network
port on the Max.
3 PC Connection
Office switch
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: You can configure an FXS version with a
phone connected to the Max and a PC on the
4
OPR LTX STX
same network, as described earlier)
SYN LRX SRX
PWR
AC 110-240V
4 AC Power Connection
Plug the Max into a power outlet.
Note: IVR functionality is not available with an
FXS version of the Max. If the PBX only has an
3
available analog trunk card and this feature is
required, an analog line card must be added and
an FXO version of the Max must be used.
18
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