[Asterisk-code-review] sig_analog: Add Called Subscriber Held capability. (asterisk[master])

[N A]

N A has uploaded a new patch set (#2). ( https://gerrit.asterisk.org/c/asterisk/+/19747 )

Change subject: sig_analog: Add Called Subscriber Held capability.
......................................................................

sig_analog: Add Called Subscriber Held capability.

This adds support for Called Subscriber Held for FXS
lines, which allows users to go on hook when receiving
a call and resume the call later from another phone on
the same line, without disconnecting the call. This is
a convenience mechanism that most real PSTN telephone
switches support.

ASTERISK-30372 #close

Change-Id: Iaac4384f73bd0f354d01b1f53e168b385dcbdbd4
---
M channels/chan_dahdi.c
M channels/chan_dahdi.h
M channels/sig_analog.c
M channels/sig_analog.h
M configs/samples/chan_dahdi.conf.sample
A doc/CHANGES-staging/csh.txt
6 files changed, 85 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/47/19747/2
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Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: Iaac4384f73bd0f354d01b1f53e168b385dcbdbd4
Gerrit-Change-Number: 19747
Gerrit-PatchSet: 2
Gerrit-Owner: N A <asterisk at phreaknet.org>
Gerrit-CC: Friendly Automation
Gerrit-MessageType: newpatchset
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