DEFINITIONS ----------- NOTE: Most manufacturers use a "1" to enable and a "0" to disable options, there are some exceptions and these are noted within the specific phone's file. ACCOLC ACCESS OVERLOAD CLASS A two digit field used by the Cellular carriers to determine who has priority access in the event of an emergency. This has not been widely implemented and the suggested entry is 0 and the last digit of the telephone number for general subscribers. EE END TO END A single digit (1 bit) entry that determines whether DTMF tones ("Touch Tones") are transmitted over the voice channel to allow access to remote services. Set to "1" under normal circumstances. GIM GROUP IDENTIFICATION A two digit/four bit field that determines how much of the SIDH is used to identify when the mobile is roaming. This number is normally 10 in the USA. HA HORN ALERT A single digit (1 bit) entry that enables the horn alert on mobile phones. When enabled ("1") most mobiles will send a ground pulse to the horn alert connector (usually a wire in the power cable) during the first few rings. This is designed to honk the horn or flash the lights, a relay must be used to avoid damage to the phone as the output pulse is low current. HF HANDS FREE A single digit (1 bit) entry that enables the hands free feature on phones so equipped. IPCH INITIAL PAGING CHANNEL A three digit number indicating the initial paging channel, normally set to 333 for non-wireline (A) and 334 for wireline (B) systems. A leading zero is common in this field. LU LOCAL USE MARK A single digit (1 bit) field that determines whether the phone transmits registration information as soon as it powers up, usually set to "1". MIN MOBILE IDENTIFICATION NUMBER This is in fact two entries, MIN1 and MIN2. MIN2 is the three digit area code and MIN1 is the seven digit phone number. On most newer phones this is entered as one ten digit number and is rarely referred to as MIN1 and MIN2. MM MIN MARK A single digit (1 bit) entry that determines whether the phone transmits the area code when accessing the system, usually set to "1". PS PREFERRED SYSTEM A single digit (1 bit) entry that determines whether the mobile scans channels 1 through 333 for the "A" system, or channels 334 through 666 for the "B" system. Set to "0" for A, and "1" for B system. This entry should match the last digit of the SIDH (see below). REP REPERTORY A single digit (1 bit) entry that enables repertory memory (speed dialing), normally set to "1". RM RADIO MUTE A single digit (1 bit) entry that enables the radio mute feature on mobiles so equipped. Generally only available when the horn alert feature is disabled as the radio mute often uses the same wire as the horn alert. When enabled the radio mute wire/connector will go to ground when the phone is in use. Use this ground to turn off or mute the car stereo, as with horn alert use a relay. SCM STATION CLASS MARK A 4 bit binary, 2 digit decimal field that designates the power output, number of channels and whether the phone is capable of VOX operation (voice operated, or push to talk transmission. Saves battery life on portables, only relevant when the Cellular system supports this feature). The most common entries for this field are: BINARY DECIMAL # OF CHANNELS POWER OUTPUT VOX 0000 00 666 3 NO 0010 02 666 .6 NO 0100 04 666 3 YES 0110 06 666 .6 YES * 1000 08 832 3 NO ** 1010 10 832 .6 NO 1100 12 832 3 YES 1110 14 832 .6 YES * Most common for all newer mobile phones. ** Most common for all newer portable phones. SIDH SYSTEM IDENTIFICATION (for) HOME SYSTEM A five digit decimal number that is specified by the system operator. The last digit corresponds to the Preferred System mark 0 or 1 (see above). COPYRIGHT 1993 CALIFORNIA GRAPEVINE COMMUNICATIONS QUESTIONS? TEL: (714) 643-8426 FAX: (714)643-8379 PART II. DEFINITIONS 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 determine priority in the event of a system overload, however it is currently useless as the system operators have generally not provided guidance for thier installers. The usual (and correct) system now in effect (in U.S.) is to use a "0" plus the last digit of the phone number. Test phones should be set at "10",emergency vehicles at "11","12" through "15" are reserved. (A class 15 system is supposed to be police, fire, or military). P.S. 1 1-bit flag designating the preferred system. If PS is "0", channels 334 through 666(EVIL!!!) are used. If PS is "1" then channels 1 through 333 are used. Even numbered system numbers (B systems) require a PS of "0", odd system numbers (A systems) require a "1". GIM A 4-bit field designating the Group Identification Mark. This number tells the Cellular system how far to look in the SIDH to determine if it is roaming in a system which may have a roam agreement with the phone system. It is usually set to "10". LOCK DIGITS A 4-bit field designating the unlock code. The digit "0" in the lock code is represented by an "A" in the actual NAM hexidecimal data. A lock code of all "0" sometimes unlocks the cellular phone.(Note: Lock codes are 3 digits. When programming a phone use "0" as the first number.) E.E. A 1-bit flag designating that end-to-end signaling is enabled. End-to-end signaling means that the DTMF tones will be transmitted on the voice channel as well as being echoed on the handset. This feature in necessary for such services as Bank by Phone, activating answering machines and in third party long distance services such as Sprint and MCI. A "1" enables the flag. Usually set to "1". REP A 1-bit flag designating that repertory memory (speed dialing) in the cellular phone is enabled. And once a again a "1" enables the flag. H.A. A 1-bit flag designating that the horn alert feature in enabled. "1" enables the flag. H.F. A 1-bit flag designating that the handsfree option is enabled. A "1" enables the flag. Often, transceivers supplied as hands-free units require that this flag be left at "0". *****************************************************************************