By default, all accounts are limited to two calls per second per account. Outbound Call API requests are queued upon acceptance, then dequeued and initiated as per the Calls Per Second (CPS) configuration for your Plivo account. Please send us a message through the contact page or directly to the email email@example.com to request an increase in the number of calls you can make per second for your account. Please note that due to the extra costs incurred by carriers and server providers, a minimum commitment is required, depending on the number of calls per second you request.
There is no limit on the number of inbound calls your number can receive per second; however, please note that, due to certain carrier restrictions, a majority of incoming calls on a single number must be answered and should not be used for services like missed call services.