Telephony & Compliance
Telephony & Compliance
Calling and messaging reliably at scale requires more than a phone number and a contact list. This section covers the compliance requirements and technical foundations that keep your team’s outreach programs running — and trusted by the carriers that deliver them.
Guides
Firewall, bandwidth, and network setup for reliable calling.
STIR/SHAKEN, voice integrity, branded calling, and CNAM.
Keep your numbers trusted and avoid spam labeling.
A2P, toll-free, and US SMS registration requirements.
Configuration and country-specific voice and SMS guidelines.
Transfer your existing phone numbers to Revenue.io.
Diagnose call and SMS failures by error code.
Carrier requirements, caller ID, and reachability rules by country.