| Summary: | DAHLIN-00187: [patch] The patch implements "hardhdlc" mode for dahdi_dynamic spans | ||
| Reporter: | Max Khon (max khon) | Labels: | |
| Date Opened: | 2010-05-04 10:36:14 | Date Closed: | 2019-05-31 09:50:28 |
| Priority: | Major | Regression? | No |
| Status: | Closed/Complete | Components: | dahdi_dynamic |
| Versions: | 2.3.0 | Frequency of Occurrence | |
| Related Issues: | |||
| Environment: | Attachments: | ( 0) hardhdlc.diff | |
| 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 ****** ADDITIONAL INFORMATION ****** The patch was developed in cooperation with Redfone LLC who made similar changes to their fonebridge product in order to support "hardhdlc" mode. The patch was tested in their lab. | ||
| Comments: | |||