Added CCBS/CCNR Party A support and enhanced COLP support.

This change adds the following features to chan_misdn:
* CCBS/CCNR Party A support for PTMP and PTP modes.
* Enhances COLP support for call diversion and explicit call transfer.

These enhanced features require a modified version of mISDN.

The latest modified mISDN v1.1.x based version is available at:
http://svn.digium.com/svn/thirdparty/mISDN/trunk
http://svn.digium.com/svn/thirdparty/mISDNuser/trunk

Taged versions of the modified mISDN code are available under:
http://svn.digium.com/svn/thirdparty/mISDN/tags
http://svn.digium.com/svn/thirdparty/mISDNuser/tags

Review: http://reviewboard.digium.com/r/218/

Merged from team/rmudgett/misdn_facility branch.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@189735 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/misdn.conf.sample

@@ -161,7 +161,10 @@ context=misdn
 language=en
 
 ;
-; sets the musiconhold class
+; This option specifies a default music on hold class to
+; use when put on hold if the channel's moh class was not
+; explicitly set with Set(CHANNEL(musicclass)=whatever) and
+; the peer channel did not suggest a class to use.
 ;
 musicclass=default
 
@@ -190,10 +193,10 @@ far_alerting=no
 ;
 allowed_bearers=all
 
-; Prefixes for national and international Type-Of-Number.  These are
+; Incoming number prefixes for the indicated Type-Of-Number.  These are
 ; inserted before any number (caller, dialed, connected, redirecting,
 ; redirection) received from the ISDN link if that number has the
-; correspondng Type-Of-Number.
+; corresponding Type-Of-Number.
 ; See the dialplan options.
 ;
 ; default values:
@@ -456,6 +459,17 @@ max_incoming=-1
 ;
 max_outgoing=-1
 
+;
+; Enable/disable the call-completion retention option support (ptp only).
+;
+; Note: To use the CCBS/CCNR supplementary service feature and other
+; supplementary services using FACILITY messages requires a
+; modified version of mISDN from:
+; http://svn.digium.com/svn/thirdparty/mISDN/trunk
+; http://svn.digium.com/svn/thirdparty/mISDNuser/trunk
+;
+cc_request_retention=yes
+
 [intern]
 ; define your ports, e.g. 1,2 (depends on mISDN-driver loading order)
 ports=1,2