| Summary: | DAHLIN-00264: xpp: E1 CAS multiframe bits not properly set | ||
| Reporter: | Tzafrir Cohen (tzafrir) | Labels: | |
| Date Opened: | 2011-11-10 16:30:52.000-0600 | Date Closed: | 2011-11-29 17:38:15.000-0600 |
| Priority: | Minor | Regression? | |
| Status: | Closed/Complete | Components: | Astribank (xpp) |
| Versions: | 2.5.0.2 | Frequency of Occurrence | |
| Related Issues: | |||
| Environment: | Attachments: | ( 0) xpp_e1_cas_fix.diff | |
| Description: | According to the ITU-T G.704 specification the Multiframe Alignment Signalling byte has the following structure: 0000 XYXX where: 0000 - Multiframe Alignment Signal X1,X2,X3 - spare bit that must be set to 1 if not used Y - bit used for alarm indication to remote site. Astribank E1/T1 DAHDI module sets the X bits to 0 that causes problems with some telco providers. They mistakenly detect remote MFAS alarm. Workaround: apply the attached fix to /usr/share/dahdi/init_card_4_30 . | ||
| Comments: | |||