Advanced Features
In scenarios where a Vendor sends a 183 Session Progress followed by a 180 Ringing message, some Caller UAs may fail to play a ringback tone to the user. ...
Fri, 8 May, 2026 at 3:51 AM
Overview The Data Retention includes four separated parameters and works in two steps. At first, the CDRs can be archived, next they will be removed com...
Thu, 14 May, 2026 at 1:04 PM
Introduction We're pleased to announce some new changes coming up in our Sippy 2020 Version. We will be introducing Multi Factored Authentication meth...
Tue, 25 Aug, 2020 at 8:56 AM
As part of our Sippy Softswitch v5.3 we will be introducing support for provisional responses as specified by RFC3262. The Softswitch is capable of sending...
Wed, 26 Feb, 2020 at 8:02 AM
The new feature was added in order to add more flexibility to configuration of routing and authorization. It allows to change the previously selected Tarif...
Wed, 25 Jan, 2023 at 7:29 AM
STIR/SHAKEN, or SHAKEN/STIR, is a suite of protocols and procedures intended to combat caller ID spoofing on public telephone networks. Caller ID spoofing i...
Mon, 19 Jan, 2026 at 9:12 AM
BLOCK any non-numeric number: $ python /home/ssp/sippy/re_test.py 's/^.*[a-zA-Z].*$/BLOCK/' B1231231236016
Result: BLOCK Add special prefix if ...
Wed, 20 Nov, 2024 at 5:14 AM
The feature works based on RFC-3325 and draft-ietf-sip-privacy-04 Implementation applicable for >=2021 version of Sippy. Rationale Existing privacy...
Wed, 12 Jun, 2024 at 11:37 PM
The utility is building a visual diagram of a call sip flow by a unique identificator of some call (call-id). Thus if a switch operator wants to investig...
Mon, 9 May, 2022 at 6:45 AM
DID ranges were implemented in 2023 version of Sippy. The documentation for DID ranges management which extends the usage of DID pool with the ability t...
Wed, 11 Jun, 2025 at 7:46 AM