root@teo:/home/teo# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 049AD65B
root@teo:/home/teo# echo "deb http://apt.opensips.org jessie 2.4-nightly" >/etc/apt/sources.list.d/opensips.list
root@teo:/home/teo# apt-get update
root@teo:/home/teo# apt-get install opensips opensips-cgrates-module
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  opensips-b2bua-module opensips-berkeley-module opensips-carrierroute-module opensips-compression-module opensips-console opensips-cpl-module opensips-dbhttp-module
  opensips-dialplan-module opensips-emergency-module opensips-geoip-module opensips-http-modules opensips-identity-module opensips-jabber-module opensips-json-module
  opensips-ldap-modules opensips-lua-module opensips-memcached-module opensips-mysql-module opensips-mongodb-module opensips-perl-modules opensips-postgres-module
  opensips-presence-modules opensips-rabbitmq-modules opensips-radius-modules opensips-redis-module opensips-regex-module opensips-restclient-module opensips-sctp-module
  opensips-siprec-module opensips-snmpstats-module opensips-sqlite-module opensips-tls-module opensips-wss-module opensips-tlsmgm-module opensips-unixodbc-module
  opensips-xmlrpc-module opensips-xmpp-module
The following NEW packages will be installed:
  opensips opensips-cgrates-module
0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
Need to get 3,441 kB of archives.
After this operation, 10.6 MB of additional disk space will be used.
Get:1 http://apt.opensips.org/ jessie/2.4-nightly opensips amd64 2.4.0-dev~20180328~c9478d4-1 [3,321 kB]
Get:2 http://apt.opensips.org/ jessie/2.4-nightly opensips-cgrates-module amd64 2.4.0-dev~20180328~c9478d4-1 [120 kB]
Fetched 3,441 kB in 0s (7,716 kB/s)
Selecting previously unselected package opensips.
(Reading database ... 63760 files and directories currently installed.)
Preparing to unpack .../opensips_2.4.0-dev~20180328~c9478d4-1_amd64.deb ...
Unpacking opensips (2.4.0-dev~20180328~c9478d4-1) ...
Selecting previously unselected package opensips-cgrates-module:amd64.
Preparing to unpack .../opensips-cgrates-module_2.4.0-dev~20180328~c9478d4-1_amd64.deb ...
Unpacking opensips-cgrates-module:amd64 (2.4.0-dev~20180328~c9478d4-1) ...
Processing triggers for systemd (215-17+deb8u7) ...
Processing triggers for man-db (2.7.0.2-5) ...
Setting up opensips (2.4.0-dev~20180328~c9478d4-1) ...
Setting up opensips-cgrates-module:amd64 (2.4.0-dev~20180328~c9478d4-1) ...
Processing triggers for systemd (215-17+deb8u7) ...