Pd User Authentication; Tetra Network Protocol 1 - Motorola MTP850 S Product Information Manual

PD User Authentication

The PD user authentication is a method of authenticating the Terminal Equipment user before allowing the packet
data link activation. A PD Authentication server connected to the SwMI performs the actual authentication. The
terminal only sends the messages between the Terminal Equipment and the SwMI. In the wide mode, the terminal
offers PPP user authentication between Mobile Terminal and Terminal Equipment using Password Authentication
Protocol (PAP) or Challenge Handshake Authentication Protocol (CHAP), before the IP link is established. The
terminal always attempts to negotiate usage of the CHAP method. However, the radio agrees to use PAP, when the
Terminal Equipment application insists. If the terminal does not require PD user authentication, it operates without
any user authentication. However, if the terminal requires the PD user authentication, it rejects the Packet Data
Protocol (PDP) context activation.
Note: If the SwMI does not agree for the authentication method (for example, PAP), the SwMI can reject
it.

TETRA Network Protocol 1

TETRA Network Protocol type 1 (TNP1) is a bridge protocol based on the TETRA layer 3 over the air protocol. The
TNP1 supports all TETRA dispatch functionality.
In the TMO, the TNP1 specifies a protocol for use over the PEI, that allows terminal equipment (TE) to have control
over the TETRA services: mobility management, call control, short data service, and supplementary services: send
GPS reports, software information and battery state information. In addition, commands to access the radio
configuration and storage parameters are available.
The radio supports TETRA standard packet data using the IP network layer protocol.
The radio can operate both on the single slot packet data channel and the multi-slot packet data channel.
Packet data applications reside internally, for example: GPS reports, WAP, or in an external device connected to the
8–wire RS232 data port on the radio. Communication to the external device is initialized using AT commands.
The system provides point to point IP connectivity allowing the following datagram exchanges:
• Radio ←→ External Equipment (TE) (for example PC).
• External Equipment (TE) ←→ Network (through radio).
The radio supports IP version 4 packet.
TNP1 services can use one of two PPP methods to connect from the terminal equipment to the radio, local mode, and
wide mode. The TNP1 should be used in wide-mode wherever possible, to allow the parallel operation of TNP1-SDS
services and packet data services over a common PPP link.
If the transmit inhibit is entered, the radio drops the wide mode connection, thus the PEI goes back to AT mode. Then
the TNP1 client detects this change and reinitiates the PPP session in local mode.
The radio disables the TNP1 session while being in the DMO.
AT commands are used to initiate the PPP service for TNP1 to operate. Once the PPP session is running all AT
commands are blocked. When the PPP session is closed, AT commands are available.
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