System Description

Chapter 9 - Appendix
MCIL -WIPLL-SDN_R1_40 Marconi Communications Ltd. 9-3 of 9-8
9.4. GPS for synchronization among Base
Stations (Not for North America)
•
In order to synchronize an environment of multiple Base Station Distribution
Units (BSDUs), it is critical that the entire network operates with the same
clock. Base stations are now equipped with a GPS antenna, which receives a
universal satellite clock signal.
•
WipLL Release 1.4 includes software modification to the BSDU to support a
GPS.
•
A BSDU revision C provides the GPS with 48VDC. However as the GPS
requires a 32VDC supply, a DC/DC convertor is available, which connects t o
the 15 pin connector on the BSDU.
•
Release 1.4 now also includes a release for BSDU revisions D and E where
there is no need for the adapter.
9.5. BSPS
•
Base Station Power System (BSPS) is released as part of a cabinet, to
provide power to the BSDUs at the base station.
9.6. VoIP
• WipLL now provides a solution for voice and data. However at this stage
voice support is for demos and tests only and is not officially released for
general use.
•
WipLL 1.4 voice support includes a Subscriber Data and Telephony Adapter
(SDTA), one of the elements of the latest WipLL solution. The SDTA
provides both voice and data services whereas the SDA provides only data
services. The SDTA also provides a LAN port to connect the local PVC and
2 POTS ports to connect analog telephones.
•
The SDTA at release 1.4 supports H.323, G.711, G.723 and G.729 standards.