1、rn 3404583 0072305 O91 rn ETSI/TC SMG Release date: February 1992 1 Released by : ETSI/PT 12 RELEASE NOTE Recommendation GSM 08.59 BSC - BTS O directions of transmission are defined in recommendation GSM 12.21. In each message, the message discriminator identifies the category and is transmitted fir
2、st. In a message the octets are sent in the order shown in the description of the messages. In an octet bit 1 is transmitted first. In the following sub-sections M 6 O are used to denote whether information elements are mandatory or optional. 4.1. e The message format and coding of these messages is
3、 below: CODING I I LENGTH 18 1 I Sequence Number IMI 1 I Note 2 I m 3404583 0072332 221 m Placement Indicator Sequence Number Length Indicator 08.59 - version 3.1.0 - 5 M 1 Note 1 of Sec 4.1 M 1 Note 2 of Sec 4.1 M 1 Binary, Note 1 Note 1: The meanings and codings of the Placement Indicator are: Onl
4、y: This message is contained within one segment O0 1 O O O O O First:The first segment of a multi-segment message O0 O 1 O O O O Middle: A middle segment of a multi-segment message O O 1 O O O O0 Last: The last segment of a multi-segment message O0 O O O 1 O O Note 2: This is the sequence number of
5、the segment in the message, modulo 256, starting with 00000000. Thus a single segment message is here coded 00000000, but this does not inhibit the use of this code in long multi-segment messages. Note 3: The Length Indicator gives the length of the OM data field which is less than or equal to 255 o
6、ctets. Multi-segment messages will be part of an overall procedure as defined in recommendation GSM 12.21. 4.2 CODING I I LENGTH 18 1 INFORMATION ELEMENT Message Discriminator1 M I 1 10 1 O O O O O O I MMI Data Field I M I v Iproprietary I Note 1: The Length Indicator gives the length of the MMI dat
7、a field, which is less than or equal to 225 octets. The protocol for MMI is not covered in this recommendation. 3404583 0072333 Lb8 Repetition Indicator TRAU O&M Message 08.59 - version 3.1.0 - 6 M 1 Note 2 O 33 Note 3 4.3 - These messages are required for option (ii) of section 4.10.1 recommendatio
8、n GSM 08.60. The message format is as below. I I I I I /Message Discriminator1 M I 1 10 o 1 o o o o 01 IChannel Number IMI 1 Note 1 I I t of Note 1: The channel number element is coded as defined for the octet of the channel number information element f recommendation GSM 08.58. Note 2: The meanings
9、 and codings of the Repetition Indicator are: - Terminate sending of O&M TRAU frames :O O O O O O O 1 - Repeat sending of O&M TRAU frames every 20 ms is received :o o o o o o 1 o until a terminate order - Send O&M TRAU frame once: 00000100 Note 3: The TRAU O&M message is not sent when the Repetition Indicator is set to 00000001, but sending of the TRAU O&M Message. is mandatory otherwise. All 264 bits of the TRAU O&M frame information field are sent unchanged in the 33 octets.
