The following is a list of commonly used abbreviations used in cellular
phones.
SIDH
A 15-bit field in the NAM designating the System Identification for the Home
System. Bit 0 of the SIDH corresponds to the Preferred System flag used
elsewhere in the NAM. Bits 6 and 5 of byte 0 are international code bits.
Normally the SIDH is entered during programming of the phone as a 5 digit
decimal number. Enter 0's to the left-most unused positions when
reprogramming.
L.U.
Local Use Flag. Tells the cellular phone user if it must preregister with
the system. Preregistration with the system means that a mobile must
transmit its parameters to the Cellular System as soon as the power-up
task and the control channel tasks are completed. "1" enables the flag.
Usually set to "1".
MIN MARK
A 1-bit flag designating that MIN2 (area code) is always sent when making
system access. "1" enables the flag. Usually set to "1".
MIN2
A 10-bit field representing the area code of the mobile ID number.
MIN1
A 24-bit field representing the mobile telephone number. MIN2 plus MIN1
equals MIN, the 10-digit phone number.
SCM
A 4-bit field designating the Station Class Mark. A (3-Watt) 832 channel
mobile unit typically will be 1000, a 1.2 Watt portable 1001 or a 0.6 Watt
handheld 1010 or 1110 (discontinuous transmission, meaning push-to-talk).
These are class I, Class II and Class III power levels respectively.
With the SCM the cellular system determines whether or not a cellular phone
can be switched to one of the 156 channels.
Bit-1 is "0" for 666 and "1" for 832. (See cellular freq. list)
Bit-2 is "0" for a mobile unit and "1" for a voice-activated
transmit.
Bit-3 and -4 identify the power class of the phone:
"00" = 3.0 watts
"01" = 1.2 watts
"10" = 0.6 watts
"11" is not assigned
IPCH
An 11-bit field designating the initial paging channel to be used if in
the home system. Normally it is 334 for wireline systems, 333 for non-
wireline systems. But most phones allow other settings for test purposes.
ACCOLC
A 4-bit field designating the overload class for the cellular phone. The
intention of this entry is to allow the Cellular System to be able to
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