[asterisk-bugs] [DAHDI-linux 0017283]: The patch implements "hardhdlc" mode for dahdi_dynamic spans

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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https://issues.asterisk.org/view.php?id=17283 
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Reported By:                Max Khon
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   17283
Category:                   dahdi_dynamic
Reproducibility:            N/A
Severity:                   feature
Priority:                   normal
Status:                     new
JIRA:                        
Reviewboard Link:            
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Date Submitted:             2010-05-04 10:36 CDT
Last Modified:              2010-05-04 10:36 CDT
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Summary:                    The patch implements "hardhdlc" mode for
dahdi_dynamic spans
Description: 
In hardhdlc mode HDLC frames are transmitted/received in unencoded form in
D-channel payload in the following format:

byte 0: control byte
bytes 1..7: data chunk (raw HDLC frame data)

control byte has the following layout:
bits 0..2: data chunk length
bit 3: reserved
bits 4..6: frame status
bit 7: continuation flag (set when there are more chunks in the current
hdlc frame)

Frame status only has meaning for the last chunk (bit 7 is not set)
Frame status can have the following values:
0: hdlc frame is ok
1: abort hdlc frame
2: hdlc frame overrun
3: bad hdlc frame FCS

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Issue History 
Date Modified    Username       Field                    Change               
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2010-05-04 10:36 Max Khon       New Issue                                    
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