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The SBC SLB performance metrics for simultaneous sessions for various call scenarios are summarized in the "Benchmarking Results" section of this page. Note that these numbers apply to our recommended CPU and memory configurations, and the results may vary depending on the actual CPUs used. Exceeding these simultaneous sessions metrics may result in poor call performance, including longer call setup times and/or poor voice quality. Ribbon recommends maintaining call rates within the performance limits benchmarked below.
Capacity Limits
Flavor: 32 VCPU, 64 GB RAM, and 100 GB HDD
The following table represents the capacity limits:
Type | Scenario | SIP Calls/Second | Call Hold |
|---|---|---|---|
SLB | TLS peering | 7000 | 10 |
SLB | UDP peering | 7000 | 10 |
SLB | TCP peering | 7000 | 10 |
SIP Sessions and Registration Capacity Limits
Flavor: 32 VCPU, 64 GB RAM, and 100 GB HDD
The following table represents the SIP sessions and the registration capacity limits:
Type | - | Initial SIP | Number of | Interval of Refresh | SIP Calls/Second |
|---|---|---|---|---|---|
SLB | UDP | 10,000 | 1.5 Million | 300 | 3000 |
10,000 | 1.5 Million | 90 | 2500 | ||
| 10,000 | 1.5 Million | 60 | 1500 | ||
SLB | TCP | 8500 | 1.5 Million | 300 | 2000 |
SLB | TLS | 2400 | 1 Million | 3600 | - |
SUBSCRIBE/NOTIFY Benchmark
Flavor: 32 VCPU, 64 GB RAM, and 100 GB HDD
The following table represents the SUBSCRIBE/NOTIFY benchmarks with the ERE:
Type | Scenario | SUBSCRIBE | REGISTER | Calls | SUBSCRIBEs/Sec | REGISTRATIONs/Sec | Calls/Sec |
|---|---|---|---|---|---|---|---|
SLB | SUBSCRIBE with 1.5 million registrations (Subscribe from a registered user) | 1.2 Million | 1.5 Million | - | 9,000 | 10,000 | - |
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