[Q][RF] FUBAR Timer in the L3 RRC protocol?
Getting RF variables from your Android modem can be extremely useful for a whole range of reasons, but the Google API developer (mofo's) refuse to document and support all but the most fundamental ones, like CID/LAC etc. among hundred more.
However, if you manage to get access to your phones ServiceMenu (SM), which are getting increasingly disabled and hidden, you may be lucky enough to find a whole bunch of useful internal functions and settings. Such as detailed RF/Network info, audio/vidoeo settingsetc etc...
What's the damn question?
On many Samsung phones, the ServiceMenu
contain something like the following (depending on modem version):
(The SM is normally accessed through *#0011# or *#197328640# from dial-pad.)
 DEBUG SCREEN
 BASIC INFORMATION
UMTS : HOME(CS+PS)
RRC State: IDLE
WCDMA 2100 Band 1
Reg PLMN 240-2, IsPCS? 0
 MM INFORMATION
MM state: IDLE
Reg state: INDEP_REGISTRATION
IMSI attatch status: 1
LU Rej: Norm=0, Period=13
Att Rej Cause=0
RAU Rej Cause=9
 RR INFORMATION
 NEIGHBOUR CELL
 GPRS INFORMATION
 SIM INFORMATION
 PHONE CONTROL
I have highlighted a the Mobility Management
(MM) Timer, called: T1312
However, there is no such timer in any of the documentation I have seen, so my suspicion is that the timer name is a typo. But then again I have only looked at ~4 documents out of several thousands from 3GPP.
What is this timer T1312 actually supposed to be representing?
Where can I find its documentation?
Yes, XDA is proably not the right place to post this question, but I'm just too lazy to sign up on another GSM just to ask this question. So among all the 5.6 Million XDA users, perhaps someone should be RF/GSM engineer enough to help me find an answer.
PS. It's good for people/developers to know that the real meat of the SM application is located inside your modem binary! The app you can see, is just a wrapper.
3GPP TS 24.008 V12.5.0 (2014-03)
: (678 pages)
"Mobile Radio Interface Layer 3 specification, Core Network Protocols".
MSM8960 Info, Architecture and Bootloader(s)
El Grande Partition Table Reference
How to talk to the Modem with AT commands
[REF][ServiceMode] How to make your Samsung perform dog tricks
[REF|R&D|RF] RF/Radio properties of Samsung ServiceMode
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