Subscriber Class; Subscriber Class By Talkgroup; Rf Power Toggle - Motorola MTP830 S Product Information Manual

The terminal recognizes whether the cell is congested (Control Channel Congestion). The terminal tries to roam to not
congested cells first, ranking congested ones as secondary. The cell congestion is one of the service level criteria.
The following cells are never marked as congested.
• Last suitable cell — if there are no other suitable cells (during roaming or initial cell selection).
• Serving cell.
The feature is configurable using the CPS.

Subscriber Class

When the radio powers up, or whenever it performs registration or roaming, it always uses its provisioned Subscriber
Class (SC).
When the radio registers on a cell that does not support any of its SCs, it is active only in services that have the
emergency priority.
Whenever the radio SC does not match the cell SC (the feature is configurable using the CPS), it either uses normal
ranking procedures (see section

Subscriber Class by Talkgroup

The Subscriber Class by Talkgroup feature forces all the radios attached to the same talkgroup to have the same
Subscriber Class.
The Subscriber Class by Group feature helps to avoid issues as presented in the following scenarios:
• Preserving traffic channel capacity. For two cells having the same coverage and placed together to multiply traffic
capacity a number of radios is attached to Talkgroup 1 on the first cell and only one radio is attached to Talkgroup
1 on the second cell. A group call uses two traffic channels (one on the first cell and one on the second). In this
scenario, multiplying traffic capacity would not work without the feature. However, as radios on the same
talkgroup are forced (by Subscriber Class mismatch) to roam to one cell, all the radios should use only the first
cell.
• Spreading radios population across cells and prohibit them from roaming. Many radios used on a small area with
multiple BTS coverage causes huge roaming traffic. A congestion occurs and as a result you would not be able to
communicate. However with the feature, radios do not roam to a cell with mismatched Subscriber Class, what
stops the roaming traffic.
A radio Subscriber Class changes when the user changes between talkgroups which are assigned to another
Subscriber Class.
Up to 16 Subscriber Classes can be configured (in the CPS) and talkgroups assigned to them. The assignment is
carried out by talkgroup GSSI or by folder (except Favorite) which the talkgroup was chosen from.
Talkgroup may be assigned to more than one Subscriber Class (either by folder or Talkgroup range). The first
assigned Subscriber Class is used. Upon receiving Subscriber Class from the SwMI radios change their Subscriber
Class to the received one. The Subscriber Class received from the SwMI over the air has always higher priority than
Subscriber Class by Group. If a radio already uses the same Subscriber Class as the one received from the SwMI, the
current Subscriber Class is not changed. On powering on, the radio is set to the default Subscriber Class or Subscriber
Class assigned to an attached talkgroup.
Favorite folders cannot be assigned to any Subscriber Class.
Super Groups are treated as scanned groups and Subscriber Class by Talkgroup feature does not apply to them.
Subscriber Class by Talkgroup is a selling feature.

RF Power Toggle

The RF power toggle is a radio-specific hardware feature enabling the radio to transmit with Class 3L (1.8 W) power.
Using the CPS the power class can be set for the radio to transmit with Class 3L (1.8 W) or Class 4.
Call Roaming on page 52), or does not roam to the cell at all.
Services and Features | 55
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