28
IC-4BRV Hardware Description
Figure 5-2: Bypass (Fallback) Mode
5.7 Network
Integration
With the configuration options tabulated above 4 BRI ports of the IC-4BRV can be connected in one
of three network configurations:
•
All four ports (ports 0-3) are connected to a subscriber PBX as shown in Figure 5-3.
Figure 5-3: All Four Ports Connected to PBX
•
Three ports (0, 1, 3) are connected to the PBX and one port (2) to the ISDN network (local
breakout) as shown in Figure 5-4. The local breakout port can be used to route calls from and
to the ISDN network. This is the fallback situation described in the paragraph ‘Hardware
Bypass’ above. When power fails or the bypass is manually activated Ports 1 and 2 are inter-
connected through the bypass relay so providing a lifeline to the ISDN network.
Hardware Installation Guide, Revision 3.11
Summary of Contents for SmartNode 1000 Series
Page 2: ......
