User's Manual

Table Of Contents
3 Detailed Description
APCD-LM043-4.0 25
EUM Registration
EUMs need to register with the CCU before user traffic can pass between the LMS4000 900
MHz Radio Network and the end user. The heart of EUM registration is the Authorization
Table, discussed in Authorization Table (CCU only) on page 189.
The EUM registration process is as follows:
1. The system operator enters the EUM’s grade of service in the CCU Authorization
Table, described in Authorization Table (CCU only) on page 189.
2. On power up, the EUM sends a registration_request to the CCU.
3. The CCU obtains the EUM’s grade of service from the Authorization Table. If the EUM
grade of service is DENIED, the CCU sends a de-registration_response to the EUM
and data communications are enabled. The EUM continues to send
registration_requests to the CCU approximately every 10 minutes.
4. If the EUM grade of service is not DENIED, the CCU sends a registration_response to
the EUM, and data communications are enabled. At this point, the CCU adds the EUM
to the Registration Table, described in Registration Table (CCU only) on page 190.
5. If at some later time, the EUM does not respond to messages from the CCU, the CCU
sends a de-registration_request to the EUM and removes the EUM from the
Registration Table. If there has been no traffic to or from the EUM for more than 12
hours, the CCU removes the EUM from the Registration Table without sending it a de-
registration_request.