GSM：CM Service Request 深度学习

如题。
平时只是关注CM业务请求，只是在DT测试、分析的时候关于此信令，但是对于此信令里面的具体内容造诣还是不够深，希望高手、前辈指点。
语音业务、短信业务、彩信业务怎么区分？

MS1
CM Service Request
MS Tick: 916432
Time: 11:07:43.81
Skip indicator : 0
Protocol discriminator : (5) Mobility management messages
Message type : 36
Ciphering key sequence number
  Key sequence : (6) 6
CM service type
  Service type : (1) Mobile originating call establishment or packet mode connection establishment
Mobile station classmark
  Revision level : (2) Mobile station supporting R99 or later versions of the protocol
  ES IND : (1) "Controlled Early Classmark Sending" option is implemented in the MS
  A5/1 : (0) Encryption algorithm A5/1 available
  RF Power Capability : (3) class 4
  PS capability (pseudo-synchronization capability) : (0) PS capability not present
  SS Screening Indicator (defined in TS 24.080) : 1
  SM capability (MT SMS pt to pt capability) : (1) Mobile station supports mobile terminated point to point SMS
  VBS notification reception : (0) No VBS capability or no notifications wanted
  VGCS notification reception : (0) No VGCS capability or no notifications wanted
  FC Frequency Capability : (1) (GSM900 only:) The MS supports E-GSM or R-GSM
  CM3 : (1) The MS supports options that are indicated in classmark 3 IE
  LCS VA capability : (1) LCS value added location request notification capability supported
  UCS2 : (1) The ME has no preference between the use of the default alphabet and the use of UCS2.
  SoLSA : (0) The ME does not support SoLSA.
  CMSP: CM Service Prompt : (0) "Network initiated MO CM connection request" not supported.
  A5/3 : (0) Encryption algorithm A5/3 not available
  A5/2 : (0) Encryption algorithm A5/2 not available
Mobile identity
  Odd/even indication : (0) Even number of digits
  Type of identity : (4) TMSI/P-TMSI
  TMSI/P-TMSI : Hex 0x8804D13A

上面不是有个服务类型么。

CM service type
指示请求的服务类型是MOC 还是SMS

在楼主给出的内容中包括了对服务类型的说明。
CM service type
  Service type : (1) Mobile originating call establishment or packet mode connection establishment
这里说的是UE主动发起的始呼业务MOC。
至于这个始呼是12.2k的语言业务还是64k的VP业务（视频电话）则要看随后的setup信令中的内容，如果是12.2k的语言业务，则setup中会给出speech。如果是VP业务则给出的是速率未受限的CS业务的说明。

Service type : (1) Mobile originating call establishment or packet mode connection establishment
给出了呼叫类型。

originating call establishment  主叫originating

CM service type中的  Service type

³ Service type (octet 1)                              ³
³ Bits                                                ³
³ 4 3 2 1                                             ³
³ 0 0 0 1  Mobile originating call establishment      ³
³          or packet mode connection establishment    ³
³ 0 0 1 0  Emergency call establishment               ³
³ 0 1 0 0  Short message service                      ³
³ 1 0 0 0  Supplementary service activation           ³
³ 1 0 0 1  Voice group call establishment             ³
            ³ 1 0 1 0  Voice broadcast call establishment 

Service type : (1) Mobile originating call establishment or packet mode connection establishment
就是这个说明了做什么业务！

补充，说明了手机支持R99或更早的协议版本，TMSI换算下