Deliver crystal-clear call quality worldwide. BZTel integrates automated Text-to-Speech (TTS), interactive key-press call routing (IVR), and live tracking metrics into one premium API framework.
Automate telephone workflows, verify accounts securely with phone verification, and deploy interactive routing structures globally.
Synthesize warm, natural-sounding voices in over 30 regional accents. Dynamically process script templates into human-like audio waveforms.
Capture keypress inputs from users (DTMF signals) to dynamically branch call menus, route customers to departments, or run database lookups.
Route call packets over international telecom networks using primary SIP trunk integrations. Guaranteed secure audio tunnels via TLS/SRTP protocols.
Connect and communicate programmatically. BZTel's queue architecture handles massive concurrent outbound call campaigns without resource contention, ensuring high-fidelity call delivery on cellular and landline networks alike.
Track the lifecycle of every call in real-time. Receive instant HTTP POST webhooks when a call starts dialing, answers, encounters a busy signal, enters a keypress selection, or disconnects. Logs are immediately updated for auditing.
Record calls programmatically with built-in consent flags to remain compliant with international call recording guidelines. Dual-channel audio recordings are compiled and saved into secure bucket links for retrieval.
curl -X POST https://api.bztel.com/v1/voice/call \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"to": "+2348054567890",
"voice_engine": "premium_female_us",
"play_text": "Hello Ramsey, this is BZTel. Your verification code is 8294.",
"play_loops": 2
}'