Patching Asterisk
Steps for patching, compiling and installed the modified version of Asterisk are below. You should be familiar with building from source before attempting this.1. Download a copy of the patch below.
| Asterisk 20 (stable) | file_download cisco-usecallmanager-20.12.0.patch (337K) event 11/02/2025 security SHA256:9b112f5212d27d2f0fab4500eb8d4e06bb103254bfe9da85bfebaddc4518e710. |
| Asterisk 22 (development) | file_download cisco-usecallmanager-22.3.0.patch (1.6M) event 17/04/2025 security SHA256:16def59ab8f75c139278fe24467c4164d41dad731449bb543974b02645d0050b. |
Note: The version of the patch for Asterisk 22 is undergoing development and may not be suitable for production use. See the Version 22 ChangeLog for more information.
2. Download the version of Asterisk that matches the version number in the name of the patch.
open_in_browser Asterisk Downloads.
3. Extract the archive and apply the patch.
~$ tar --extract --gzip --file asterisk-X.X.X.tar.gz
~$ cd asterisk-X.X.X
~/asterisk-X.X.X$ patch --strip=1 < ../cisco-usecallmanager-X.X.X.patch
4. Configure the build environment and then compile the source code.
~/asterisk-X.X.X$ CFLAGS="-DENABLE_SRTP_AES_GCM -DENABLE_SRTP_AES_256" ./configure
~/asterisk-X.X.X$ make
5. Install the patched version.
~/asterisk-X.X.X$ sudo make install
6. Optionally install the sample configuration files. Note: sample sip.conf, sip_notify.conf and res_parking.conf contain patch-specific features so you will need to do this at least once.
~/asterisk-X.X.X$ sudo make samples