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24.2.2.2
Gateway Selection
This defaults to 'None' unless the Feature Flags/DMO Gateway option is selected, see Paragraph
14.18 "DMO Gateway" and Paragraph 24.2.2.1 "Communication Type".
It has the following 3 options:
•
None - The terminal cannot use a Gateway
•
Specific - the terminal will use a Gateway with the Gateway Address specified for this
Talkgroup.
•
Automatic - the terminal will use any Gateway it can find and to which it can connect.
24.2.2.3
Gateway Address
This is the specific address of the Gateway that the terminal will use, the MNI (Mobile Network
Identity). The Gateways now have standard MCC & MNC codes and to prevent terminals accessing
a different system, a specific address used for an own system gateway is entered in this field.
Note: Generation 1 terminals are not able to set up calls on a gateway, but if called by a terminal of
at least Generation 2 build, the Generation 1 terminals are able to take an active part in the
call, that is Tx & Rx.
24.2.2.4
Frequency Channel
This field specifies the frequency to be used for this DMO group, if no frequency is specified, the
group will not be enabled.
24.2.2.5
Receive Call to DMO Partnership Networks
It is possible that different network providers will share Gateway access, thus allowing terminals of
one system to access terminals of another system via a Gateway. These calls are referred to as
Inter-MNI or Intra-MNI calls and are dependent upon the direction of the call.
•
Inter-MNI (Mobile Network Identity - made up of the Country Code & ISSI) calls are calls
between own system terminals via own system Gateway, or received calls, on own system
Gateway, from a terminal of another system.
•
Intra-MNI calls are calls to another system terminal via the other system Gateway.
Note: A terminal on its own Gateway is making Inter-MNI calls, a terminal using another system's
gateway is making Intra-MNI calls.
An incoming group call addressed to MNIRCVD and SSIRCVD will be accepted by the terminal if:
•
SSIRCVD (Short Subscriber Identity Received) equals the selected GSSI, and:
i.
ii.
6866588D21-D
SSIRCVD equals the group MNI, or
If SIM is not supported, the received call to partnership networks is YES and MNIRCVD
Chapter 3 - MTP850 Ex/MTP810 Ex Product Information Manual
Customer Programming Software (CPS)
March 2009
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