Quantum and Evolution Series Installation and Operating Handbook
8-63
Sat-ABIS Web Diagnostics
The compressed data is passed over satellite formatted as HDLC packets that run run
asynchronously to the T1/E1 interfaces. However, the hub clock input to Sat-Abis is
extended over satellite and used to synchronise the remote to the hub. The hub clock is
used as a clock generator for HDLC-framed data and the remote modem derives its clock
from the satellite signal and generates a 2.048 MHz bearer to the BTS. The bearer is
looped by the BTS back into the remote for synchronised communications back to the
hub.
As well as saving up to 50% bandwidth, Sat-ABIS as an embedded solution reduces box
count.
Sat-ABIS is compatible with FastLink low-latency LDPC to minimise delay and it is also
compatible with
Paired Carrier
for even greater bandwidth savings.
