Voice SIP Trunking PBX Integrations DNS Outbound authentication Number requirements for outbound calling Anonymous calls Emergency calls Retrieving Call Detail Records (CDRs) Inbound calls Media encryption MTU SIP error codes Troubleshooting ACK timeouts Native Voice in MSC Voice API OTP Notification DTMF FlowBuilder Outbound Voice API prompts Callbacks Numbers and porting Company profiles Number Requirements Number Porting CLI Right of Use (Authorized numbers) Voice - HALO FlowBuilder WhatsApp Business Calling Realtime transcripts Bring Your Own Carrier (BYOC) Voice Insights Billing and invoicing Prefix groups Billing increments Surcharges Guardrails for fraud prevention Regulations STIR/SHAKEN Local regulations
