VoiceGear SkyBridge User Manual - page 60
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7.3 Analog PBX Configuration Overview
Even though specific PBX configuration for analog connectivity to the VoiceGear SkyBridge gateway varies
heavily on the type of your PBX, there are two main connection approaches for gateway integration: extension
side or trunk side.
7.3.1 Extension Side Connectivity
With extension side PBX integration, your gateway is connected to the PBX as if it was a regular phone (or set of
phones). This is achieved by connecting analog FXO ports on the gateway to analog FXS ports on the PBX. With
this setup, each of your Skype lines is essentially a PBX extension and has an extension number. In order to be
able to detect which line is free and offer it to potential users who need to dial out with Skype, you need to
setup a hunt group to go through all of the extensions connected to Skype lines and find the one that is not
occupied. Most PBX systems offer the extension hunting functionality, however this is an extra configuration
step.
7.3.2 Trunk Side Connectivity
With trunk side PBX integration, your gateway is connected to the PBX via analog lines which are treated as
external phone lines. The only setting required on the PBX is a prefix assignment or a dial plan to be able to
connect to Skype lines by, for example, dialing 8 before the actual number or Skype shortcut. Any incoming calls
from the gateway can easily be routed to your existing auto attendant or operator. In order to utilize this
connectivity, your gateway must come equipped with analog FXS lines.