Solver SIP simulates a high number of user agents generating basic call, registrations, and SIP messages towards the Core Network. Apart from signalling load simulation, Solver SIP can also generate User Data traffic and perform PESQ measurements.

Solver SIP support the RFC3261 specification along with several extensions such as RFC3262 (Reliable responses) and 3265 (SUBSCRIBE/NOTIFY).

Solver SIP can generate calls towards IMS systems by using the concept of precondition and reliable responses. Can also be used for simulating subscribers performing calls over VoLTE.

Solver SIP can generate massive SIP traffic towards different SIP Core Network entities. User data can be simulated and by measuring PESQ values, Media Gateways can be tested.

• Possibility to simulate variations in network quality by changes in bitrates and codecs, thereby providing possibility to discover problems with changes in the SUT (System under test).
• Generates and receives User Agents calls and emulates speech.
• Provides fine-grain control over call setup rates and parameters.
• Displays call activity and completion statistics such as setups, releases and active calls on-line.
• Full statistics, in real time, of all SIP signaling messages sent and received from the Solver system. If user data is generated, statistics of RTP and RTCP is also available in real time.
• Loads the SIP Core Network with thousands of simultaneous calls and signalling.
• Performs PESQ to evaluate speech quality.
• Emulated speech with codecs G.722, G.711 (alaw/ulaw), GSM-FR/GSM-EFR, GSM-HR, AMR/AMR-WB (all rates and mode change/rate control), G.729AB, G.723.1A, iLBC and RFC3389 Comfort Noise.

SIP-I

ISUP using SIP as bearer. Optional feature to Solver SIP.

PESQ

Verify speech quality by using PESQ measurements on several simultaneous calls, while at the same time generating heavy background traffic.

IMS
IMS Call Flows – Generate calls towards IMS systems by using the concept of precondition and reliable responses. Can also be used for simulating subscribers performing calls over VoLTE.