---
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"@type": TechArticle
"@id": https://www.twilio.com/docs/glossary/cps#article
headline: CPS
description: "CPS (calls per second) is the rate at which Twilio executes outbound calls for an account. "
url: https://www.twilio.com/docs/glossary/cps
inLanguage: en
dateModified: 2026-07-20T14:57:59.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# CPS

CPS (calls per second) is the rate at which Twilio executes outbound calls for a given account. By default each account is granted 1 CPS for Programmable Voice API calls and 1 CPS per trunk per region for Elastic SIP Trunking calls. Inbound calls and \<Dial> calls are not limited by CPS.

You can manage CPS in Console under Voice -> Settings -> General for Programmable Voice, and under Elastic SIP Trunking -> Trunk Name -> Termination. New accounts without an approved Business Profile cannot self-serve calls per second (CPS). [About Business Profiles](https://console.twilio.com/us1/account/trust-hub/customer-profiles).

In aggregate calls are executed at the rate defined by the CPS. Individual calls may not execute at the anticipated rate — you may see individual seconds with more or fewer CPS, especially for bursty traffic — but over a month the call execution rate will average the CPS rate set for that account or trunk.