16
Description
TB9100/P25 CG Installation and Operation Manual
© Tait Electronics Limited January 2007
a 28VDC output to power the PA circuit boards. The boost regulator board
also provides a 12VDC output to power the reciter. Customers must provide
their own power supply. Without a PMU, the base station can only be
powered by DC and cannot carry out its power management functions.
Receive-only Base Station
The TB9100 base station can be provided as a receive-only variant in
systems that need sites to enhance the receive coverage. This consists of a
single reciter in a subrack, with or without power management. The exciter
is present but not licensed to transmit.
P25 Console Gateway
The purpose of the P25 Console Gateway is to provide an encrypt/decrypt
point at the analog line. The P25 Console Gateway’s analog line connects
to the dispatch system, and its Ethernet interface connects to the TaitNet
P25 Network. It has no RF functionality.
Encrypted voice quality is indistinguishable from unencrypted.
The P25 Console Gateway supports Project 25 compliant DES (via the basic
encryption license) and AES (Advanced Encryption Standard) with the AES
license.
Since the control panel is another analog access point, decryption at the
control panel could be a point of insecurity in the system. For this reason,
there is no encryption or decryption to the control panel. The control panel
speaker plays unencrypted speech (if that is present at the gateway). If the
gateway is receiving or transmitting encrypted speech, the speaker simply
produces encrypted noise.
1.6
Base Station Applications
TB9100 base stations can be used as repeaters or as base stations. They can
be connected together as a channel group, to form a wide area repeater or
wide area base station. They can be used in trunking systems and in
conventional systems with analog or digital dispatch equipment. For more
information, see the TaitNet P25 System Manual.
Repeater
The TB9100 base station can function as a standalone repeater. The analog
line is not used and the Ethernet line is only used for CSS access.
Содержание P25 CG
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Страница 72: ...72 Maintenance TB9100 P25 CG Installation and Operation Manual Tait Electronics Limited January 2007 ...
Страница 76: ...76 Troubleshooting TB9100 P25 CG Installation and Operation Manual Tait Electronics Limited January 2007 ...
Страница 120: ...120 Technical Description TB9100 P25 CG Installation and Operation Manual Tait Electronics Limited January 2007 ...
Страница 146: ...146 TaitNet P25 Glossary TB9100 P25 CG Installation and Operation Manual Tait Electronics Limited January 2007 ...