Softswitch performance

The system performance in ideal conditions (no extensive GUI usage and no transcoding):

• MOR single-server solution - up to 500 concurrent calls, up to 50 CPS (most of the time it's closer to 20).
• MOR multi-server solution - up to 2000 concurrent calls, up to 100 CPS

• M4 single-server solution - up to 500 concurrent calls, up to 100 CPS
• M4 multi-server solution- up to 10 000 concurrent calls, up to 1000 CPS.

Factors that influence softswitch performance

• Hardware specifications (CPU, RAM, HDD type - 5400/7200 rpm, SSD, SAS, Raid, NIC etc.)
• Network (routers/switches)
• Providers (connectivity, quality, PDD)
• CPS (if you accept a lot of short calls at the same time (so called dialer or call center traffic), softswitch performance decreases)
• Structure of call (signalling only or signalling with media)
• Processes, running on the same time (if you generate invoices, statistics or run other processes, softswitch performance decreases)
• Additional functionality usage (if you record calls, use different IVR structures, softswitch performance decreases)
• Codec and protocol used
• Protocol and codec conversion (in case of transcoding performance decreases two times)
• Calls length (if you accept a lot of short calls at the same time (so called dialer or call center traffic), softswitch performance decreases)
• DB and GUI on same server or on the separate (if you separate DB and GUI, you can increase performance)
• SIP balancer present or not (if you use SIP balancer in front of the servers, you can increase performance)
• Business model (Calling Card, Callback and Call Center calls decreases softswitch performance)
• etc

See also: How do you select a softswitch based on concurrent calls?

Screenshots from real use cases

In all of the below examples, companies were using recommended hardware.

MOR, single server solution, Wholesale Transit business

Implementation: single server with 24 cores, GUI is not used almost at all.

Results: up to 500 concurrent calls, up to 1500 call attempts per minute.

MOR, 4-servers solution, Wholesale Transit business

Implementation: SIP balancer, 3 Asterisk (MOR) servers and DB/GUI server.

Results: 1200 concurrent calls, 1500 call attempts per minute.

M2, 7-servers solution, Wholesale Transit business

Implementation: SIP balancer, 5 Freeswitch (M2) servers and DB/GUI server.

Results: 6105 concurrent calls, up to 6400 call attempts per minute.

See also

• CPS Limit
• Recommended hardware
• How do you select a softswitch based on concurrent calls?
• Performance Suggestions