Specifications

MyPBX SOHO Administrator Guide
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6.2 Trunks
6.2.1 Physical Trunk
Multiple physical trunks are supported in MyPBX SOHO V5, like BRI, PSTN. Please make
sure you have installed the modules inside before you use the relevant physical trunk. BRI
trunk requires B2 module, and PSTN trunk requires the O2 module.
Figure 6-19
BRI Trunk
Basic Rate Interface (BRI, 2B+D, 2B1D) is an Integrated Services Digital Network (ISDN)
configuration intended primarily for use in subscriber lines similar to those that have long
been used for plain old telephone service. The BRI configuration provides 2 bearer
channels (B channels) at 64 kbit/s each and 1 data channel (D channel) at 16 kbit/s. The B
channels are used for voice or user data, and the D channel is used for any combination
of data, control/signalling, and X.25 packet networking.
Figure 6-20
Click edit to configure the details of BRI trunks.