- Register works in both ways
- STUN works as client
- Authentication to remote endpoints only
- Early audio (183) works in both directions
- Caller ID works in both directions
Note: The implementation is only a small subset of many SIP features.
* Multiple network instances are now possible to attach multiple networks
* Early audio handling fixed
* Number type can be given from base station (setup / setup confirm)
* Equal callref for different GSM-MS instances are handled correctly
The remote application interface does not allow any bchannel to be
exported or imported. Audio traffic via socket interface is used instead.
The joinremote instance became obsolete and is removed.
The remote action (routing) became obsolete, use interface.conf instead.
The handling of loopback device became obsolete and was removed
The chan_lcr does not rely on mISDN anymore, that means:
- can be used with GSM and without mISDN at all.
- chan_lcr can be used as internal extension of LCR (e.g. SIP phone)
(chan_lcr can be handled as any other interface)
- no loopback device to be used anymore.
The dependency on mISDN (loopback interface) is completely removed
from GSM and SIP interfaces.
The built in bridge of LCR now forwards audio data between these
interface instances or between these instances and other instances.
Additionally both GSM BS and SIP support direct forwarding of RTP
traffic between other SIP endpoint and OpenBSC, so no traffic is
forwarded by the LCR itself. This is done by forwarding RTP peer
informations between these interface instances.
chan_lcr can be handled as an interface. This way it is possible to (e.g.):
- make a SIP phone become an LCR extension with all LCR features.
- make conference calls. (untested)
- perform parallel ringing. (ISDN phone and SIP phones can ring in
parallel.)
- do voice recoding.
It is still also possible to link chan_lcr directly without interface
(as before).
Documentation/howto for that will follow.
If no specific interface is given for the 'extern' rule in the
routing.conf, or if call is forwarded (settings), then only
interfaces marked with 'extern' flag are used.
You need to set this flag when upgrading to this version. See
default/interface.conf for hint.
modified: README
modified: apppbx.cpp
modified: default/interface.conf
modified: interface.c
modified: interface.h
Added limitation option for maximum dialed digits. If dial string exceeds
that limit, overlap-dialing is used to complete dial string.
Siemens EWSD (APS V16) only allows 20 digits at a time.
modified: README
modified: chan_lcr.c
modified: default/interface.conf
modified: dss1.cpp
modified: dss1.h
modified: ie.cpp
modified: interface.c
modified: interface.h
Andreas Eversberg
Andreas Eversberg