Generic Advice of Charge.

Asterisk Generic AOC Representation
- Generic AOC encode/decode routines.
  (Generic AOC must be encoded to be passed on the wire in the AST_CONTROL_AOC frame)
- AST_CONTROL_AOC frame type to represent generic encoded AOC data
- Manager events for AOC-S, AOC-D, and AOC-E messages

Asterisk App Support
- app_dial AOC-S pass-through support on call setup
- app_queue AOC-S pass-through support on call setup

AOC Unit Tests
- AOC Unit Tests for encode/decode routines
- AOC Unit Test for manager event representation.

SIP AOC Support
- Pass-through of generic AOC-D and AOC-E messages to snom phones via the
  snom AOC specification.
- Creation of chan_sip page3 flags for the addition of the new
  'snom_aoc_enabled' sip.conf option.

IAX AOC Support
- Natively supports AOC pass-through through the use of the new
  AST_CONTROL_AOC frame type

DAHDI AOC Support
- ETSI PRI full AOC Pass-through support
- 'aoc_enable' chan_dahdi.conf option for independently enabling
  pass-through of AOC-S, AOC-D, AOC-E.
- 'aoce_delayhangup' option for retrieving AOC-E on disconnect.
- DAHDI A() dial string option for requesting AOC services.
  example usage:
  ;requests AOC-S, AOC-D, and AOC-E on call setup
  exten=>1111,1,Dial(DAHDI/g1/1112/A(s,d,e))

Review:	https://reviewboard.asterisk.org/r/552/


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@267096 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 18 insertions, 0 deletions

diff --git a/configs/chan_dahdi.conf.sample b/configs/chan_dahdi.conf.sample
index ac4008d71..57b0fe0da 100644
--- a/configs/chan_dahdi.conf.sample
+++ b/configs/chan_dahdi.conf.sample
@@ -289,6 +289,24 @@
 ;
 ;facilityenable = yes
 ;
+
+; This option enables Advice of Charge pass-through between the ISDN PRI and
+; Asterisk.  This option can be set to any combination of 's', 'd', and 'e' which
+; represent the different variants of Advice of Charge, AOC-S, AOC-D, and AOC-E.
+; Advice of Charge pass-through is currently only supported for ETSI.  Since most
+; AOC messages are sent on facility messages, the 'facilityenable' option must
+; also be enabled to fully support AOC pass-through.
+;
+;aoc_enable=s,d,e
+;
+; When this option is enabled, a hangup initiated by the ISDN PRI side of the
+; asterisk channel will result in the channel delaying its hangup in an
+; attempt to receive the final AOC-E message from its bridge.  The delay
+; period is configured as one half the T305 timer length. If the channel
+; is not bridged the hangup will occur immediatly without delay.
+;
+;aoce_delayhangup=yes
+
 ; pritimer cannot be changed on a reload.
 ;
 ; Signalling method. The default is "auto". Valid values: