WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0 Transmission Modes
201
Additional information see “Modem and FAX Modes” on page 309.
V.92
Additional information see “Modem and FAX Modes” on page 309.
MPT-1327
Trunked mobile radio makes a limited number of radio channels available for a relatively large number of
mobile subscribers by channel sharing and appropriate access and signaling procedures on a control chan-
nel. The software monitors control and traffic channels.
Duplex ARQ TDMA, Dynamic Frame Length Slotted ALOHA
Channel spacing = 12.5 kHz
NZRI
A trunked network is controlled by a fixed base station (TSC - Trunked System Controller). Wide areas re-
quiring radio coverage are divided into cells each of which is controlled by a TSC. The TSCs are connected
to a hub and are controlled by a Management Controller. The TSCs register roaming of the mobile units
and route traffic to the TSC which is nearest to the subscriber. TSCs may be connected to the public tele-
phone network.
Trunked systems may carry voice or data signals. The mobile unit uses two-channel simplex and the base
station full-duplex.
The British MPT-1327 specifications for trunked private land mobile radio systems have won general and
de facto acceptance in Europe. MPT-1327 specifies the general signaling features to be used on the
trunked system. The system is used in the UK, France, Germany (Chekker, License A), Switzerland
(Speedcom) and the Scandinavian countries with national adaptations.
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