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Feature #3242

develop software for E1 framing / deframing, CRC4, alignment FSM

Added by laforge 5 months ago. Updated 4 months ago.

Status:
Resolved
Priority:
Normal
Assignee:
Target version:
-
Start date:
05/06/2018
Due date:
% Done:

100%

Estimated time:

Description

I've been writing some code for the framing/deframing for basic frame and crc4-multiframe, as well as Rx + Tx side of CRC4 handling, alignment FSM, ...

It can be found in the laforge/software branch of osmo-e1-xcvr. See http://git.osmocom.org/osmo-e1-xcvr/log/?h=laforge/software

TODO is mainly: testing of various modes (crc4/non-crc4, ...) as well as any interop tests with real-world E1 out there. My reading of the spec may very well be wrong


Related issues

Related to E1/T1 Hardware Interface - Feature #2484: Architecture of USB E1/T1/J1 adapterStalled2017-09-02

History

#1 Updated by laforge 5 months ago

  • Status changed from New to Stalled

I'll put this task aside util we have some real-world samples of raw (but synchronized, HDB3-decoded) to validate against.

#2 Updated by laforge 5 months ago

  • Related to Feature #2484: Architecture of USB E1/T1/J1 adapter added

#3 Updated by laforge 4 months ago

  • Status changed from Stalled to Resolved
  • % Done changed from 60 to 100

The software works against the traces Dieter has provided, so marking this as resolved for now. If we find bugs, we can file separate bug issues.

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