Aastra OpenCom 100 Mounting And Commissioning User Manual page 151

PBX Cascading
The PCM port is on the add-on module of the OpenCom 130. You must
therefore install an add-on module in each of the two PBXs before they can be
cascaded.
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Administration data: one CAT-5 Ethernet lead.
– In the case of an OpenCom 130, connect the LAN2 port of the master
system's add-on module with a LAN2 port of the slave system's add-on module.
– In the case of an OpenCom 150, connect the LAN1 port of the master system
with a LAN1 port of the slave system.
PBX 1
(Master)
Basic module
LAN PCM
Voice data lead
(eight pins assigned,
joined 1 to 1)
Cascaded PBX system (OpenCom 130)
PBX 1
(Master)
PCM1 PCM2
Voice data lead (eight pins
assigned, joined 1 to 1)
Cascaded PBX system (OpenCom 150)
Add-on module
LAN1 LAN2 LAN0
Hub/Switch
(in LAN of company)
LAN0 LAN1
CAT-5 Ethernet lead
Functionality of PBX Cascading
PBX 2
(Slave)
Basic module Add-on module
LAN PCM LAN1
CAT-5 Ethernet lead
PBX 2
(Slave)
PCM1 PCM2 LAN0
Hub/Switch
(in LAN of company)
LAN2 LAN0
LAN1
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