Comtech EF Data DTMX5000 SpectraCast - Manual (Page 167)

Central Configuration Unit DTMX5000 IP Gateway
Rev. 1 B-31
B.13.1.2 Group ID
Enables the DTMX5000 Gateway to recognize the group to which the client
belongs. Groups enable aggregation of the date of groups of users or multicast
users logically under separate PIDs. This parameter must be encoded in a
Callback-ID (Type 20) RADIUS attribute, as a string containing the Group ID
number.
B.13.1.3 Multicast Group Information.
The CCU receives a list from the RADIUS Server of multicast channels to which
a subscriber is entitled. Based on this list, the CCU sends the appropriate
encryption keys to the client. Multicast is a one-to-many transmission method
that enables a single packet transmission to be routed to multiple users.
This parameter must be encoded in a Callback-Number (Type 19) RADIUS
attribute, as a string containing the Multicast Group numbers the client is entitled
to receive, separated by commas. The valid Multicast Group are group number 1
through group number 15. You can enter any or all of these group numbers,
separated by commas. The string may also be empty if the user is not entitled to
receive any Multicast Group.
For example: the string 1, 2, 15 specifies that the user is entitled to receive
Multicast Groups 1, 2 and 15. A shortcut can be used for a group range.
For example, to specify that the user is entitled to receive Multicast Groups 1,2,
3, 7, 12, 13, 14, the following string is also valid 1-3, 7, 12-14.
Note: The above is a general description of the client parameters sent from the
RADIUS Authentication Server to the CCU. It applies to any RADIUS-
compliant Authentication Server. For instructions on how to configure a
specific RADIUS Server (for example NTXacs RADIUS Authentication Server)
to send client parameters to the CCU, please refer to the relevant Application
Notes.