avpops offers the interface to configuration file for managing pseudo-variables and AVPs. Starting with OpenSER 1.2.0, many of avpops operations can be done directly in script, but still some of its functionalities are not. The provides as well ways to load/store/delete values from/to a database.

AVPs can be considered as variables per SIP transaction, and they can be specific for a user. Using them, many services can be created directly from configuration file, e.g., serial-forking, dynamic ringing time-out, white/black lists.

A very useful function is avp_printf() which allow to combine strings and pseudo-variables to get new values.



avp_check() does testing of pseudo-variables with different operators like equal, regular expresion matching, fast matching, bitwise tests ... avp_op() can be used for arithmetic operations.

Links to documentation of avpops module:

• avpops module for openser 1.0.x
• avpops module for openser 1.1.x
• avpops module for openser 1.2.x
• avpops module for openser devel