Specifications

6-50 Reference Guide
Model No.
Running Head
PARS Screen WAN Card
6.4.5 Two Links are Lost, Two IADs are Separated from the Ring
If the link from IAD 1 to IAD 2, and the link from IAD 4 and IAD 5 fail, then the traffic is
rerouted as illustrated in Figure 6-40.
Figure 6-40. Traffic Flow when two connected IADs are separated from the Ring
6.4.6 Integrated Access Device Functionality
In order to offer PARS feature, the integrated access device will perform the following
functions:
The integrated access device will provide a receive side and transmit side option to voice and
data Channels and WAN time slots. It will defferentiate between transmit side and receive side
of each time slot/channel (voice or data). This is done internally and is not visible to the user.
The integrated access device will designate the received side of a link either active or inactive
and the transmit side of a link active or inactive. This is done internally and is not visible to
the user.
IAD 1 IAD 2
IAD 3
IAD 4
IAD 5
Secondary Ring
Primary
Ring