Hello, everyone!
I've got c123-compatible phone, the firmware is running and that's really cool. Testing branch even sometimes says that a call has been released, but it doesn't seem to reach the target (no ringing). I would like to debug and maybe contribute, but...
But here is a problem: I don't understand GSM and can't find reasonable documents to read. I've looked through a book on gsm "GSM and Personal Communications Handbook", but it doesn't seem to provide enough info. Specifications of GSM I found at http://www.3gpp.org/specification-numbering are too plentiful.
Could you please advise some books to understand the protocols? Or could you tell me where to look for specifications and which should be read first (an what to be read at all) ?
http://openbsc.osmocom.org/trac/wiki/GSMStandards
On Wed, Jul 06, 2011 at 05:28:31PM +0400, Sergey wrote:
Hello, everyone!
I've got c123-compatible phone, the firmware is running and that's really cool. Testing branch even sometimes says that a call has been released, but it doesn't seem to reach the target (no ringing). I would like to debug and maybe contribute, but...
But here is a problem: I don't understand GSM and can't find reasonable documents to read. I've looked through a book on gsm "GSM and Personal Communications Handbook", but it doesn't seem to provide enough info. Specifications of GSM I found at http://www.3gpp.org/specification-numbering are too plentiful.
Could you please advise some books to understand the protocols? Or could you tell me where to look for specifications and which should be read first (an what to be read at all) ?
Thank you!
06 июля 2011, 18:28 от Alexander Huemer alexander.huemer@xx.vu:
http://openbsc.osmocom.org/trac/wiki/GSMStandards
On Wed, Jul 06, 2011 at 05:28:31PM +0400, Sergey wrote:
Hello, everyone!
I've got c123-compatible phone, the firmware is running and that's really
cool.
Testing branch even sometimes says that a call has been released, but it
doesn't seem to reach the target (no ringing).
I would like to debug and maybe contribute, but...
But here is a problem: I don't understand GSM and can't find reasonable
documents to read.
I've looked through a book on gsm "GSM and Personal Communications
Handbook", but it doesn't seem to provide enough info.
Specifications of GSM I found at http://www.3gpp.org/specification-numbering
are too plentiful.
Could you please advise some books to understand the protocols? Or could you tell me where to look for specifications and which should be
read first (an what to be read at all) ?
I can't pass 'ETSI PDA Validation'. After registration a letter came saying: "In order to validate your account please reply to this message a blank email" The same e-mail comes every time I try to download a new standard. I've tried replying with various kinds of blank e-mails: blank body, with "Re:" and without, deleting original text and not with no luck.
Please help me, what have you answered to get access? Maybe I just have to wait some time?
On Wed, Jul 06, 2011 at 09:29:48PM +0400, Sergey wrote:
I can't pass 'ETSI PDA Validation'. After registration a letter came saying: "In order to validate your account please reply to this message a blank email"
Please help me, what have you answered to get access?
Sorry, It was many, many years ago that I registerd on the ETSI site, I don't remember how exactly the registration was done.
However, if you receive empty messages, I would suggest to contact the ETSI webmaster / secreteriat about that.
baseband-devel@lists.osmocom.org
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Alexander Huemer -
Harald Welte -
Sergey -
Steve Markgraf