4RF Aprisa XE User Manual page 156

154 | Cross Connections
Local Drop and Insert Cross Connections
An example of a local drop and insert cross connection is shown below:
Two 4 wire E&M interfaces on the near end terminal slot C ports 3 & 4 are dropped out of a framed E1 on
the near end terminal slot D port 1 in timeslots 1 & 2. This cross connection includes one bit of signalling
(A bit).
Another two 4 wire E&M interfaces on the near end terminal slot C ports 1 & 2 are inserted into the radio
link to a framed E1 on the far end terminal slot D port 1 in timeslots 1 & 2. This cross connection includes
one bit of signalling (A bit).
The remaining framed E1 on the near end terminal slot D port 1 timeslots are transported over the radio
link to the framed E1 on the far end terminal slot D port 1. This cross connection includes four bits of
signalling (ABCD bits).
Aprisa XE User Manual