[Asterisk-Users] Q: ISDN / E1-PRI - fax problems - Receiving and setting of Service Indicator (SIN) / Bearer Capability (BC) / High Level Compatibility (HLC) / Low Level Compatibility (LLC)

[Peter Svensson]

On Tue, 8 Feb 2005, Frank Sautter wrote:

> is there any usable documentation on the HLC or LLC octets (bytes)?
> i searched etsi and was overwhelmed with the searchresults (1531). what 
> i need to modify libpri would be a table of possible values and where to 
> find the HLC and LLC fields in the D-Channel.

ITU q.931 clause 4.5.17 for HLC and 4.5.19 for LLC. 
I'd expect ETSI ETS 300 403 01 to include q.931 by reference, possibly 
noting some differences.

Peter