Ericsson EF738 Service Manual page 96

Test/Service Programs
NAM
Each country area is subdivided into NAM-areas NAM1 and NAM2, which are pro-
grammed with System A and System B parameters when shipped from factory.
A configuration of system and subscriber data (preferred system, subscriber
number, etc.) can be programmed into each NAM.
International Mobile Station Identity (IMSI)
This IMSI identity is a 10-digit number composed of three parts:
- MNC (Mobile Network Code), 3 digits
- MCC (Mobile Country Code), 1 digit
- MSIN (Mobile Station Identification Number), 6 digits
Subscriber Number
The subscriber number may include from 0 up to 10 digits.
Pref Sys
Both NAMs associated with each country are programmable to become operable in
both systems. If both systems are programmed as System A, the automatic NAM
switch function will search the A system channels for both NAMs.
Home System Identity Number (AID)
This identity number states the subscriber home system and is provided by the sub-
scription operator.
First Paging Channel
The first paging channel is programmed in service mode and the appropriate value
for this parameter is provided by the home system operator at subscription.
Roam
This parameter defines whether inter system roaming is allowed on the comple-
menting network or not. If set, it will enable the use of both systems (A and B) in the
present NAM.
Access Overload Class
Overload class field that controls access attempts made by the MS (identical to the
second last digit of the IMSI).
Response to Local Control Message Enabled
Determines whether the MS will respond to Local Control Messages sent on the
Forward Control Channel.
Sending of Extended MS Number
Determines whether the MS must send the extended address word when accessing
the system.
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