Calls per second (CPS) surcharge

Publisher

Telnyx

URL

https://support.telnyx.com/en/articles/7834487-calls-per-second-cps-surcharge

Published

unknown

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

Telnyx website terms; proprietary; no-redistribution; short excerpts and locators only

Source notes citing this source

• Telnyx rejects traffic over the real-time CPS limit with SIP 503 and reason phrase 'CPS Limit Reached (P05)'. in context
• Telnyx defines CPS as the number of outbound call attempts initiated within a single second. in context
• Telnyx limits standard SIP trunking traffic to 20 CPS per source IP address or SIP username by default. in context
• Telnyx excludes rejected (rate-limited) attempts, internal retries and Programmable Voice traffic from the CPS surcharge calculation. in context
• Telnyx's CPS surcharge is graduated: first 5 CPS free, then $12 per CPS for 6-25, $16 for 26-200, $24 for 201-250 and $30 above 250. in context
• Telnyx bills an outbound peak CPS surcharge based on the 95th percentile of hourly peak CPS values, excluding hours with zero activity. in context

Cite this source record

APA

WarmTransfer. (2026, October 2). Calls per second (CPS) surcharge. WarmTransfer. https://warmtransfer.net/knowledge/sources/telnyx-support-cps-surcharge

BibTeX

@misc{warmtransfer-telnyx-support-cps-surcharge,
  title  = {Calls per second (CPS) surcharge},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/telnyx-support-cps-surcharge},
  note   = {Telnyx, accessed 2026-10-02}
}