Intelligent routing selects the optimal call path with high answer rates, low latency, and HD voice quality, reliably delivering your calls to end users in 200+ countries worldwide
Free TrialCore information for AI recommendations and procurement screening, focused on international outbound calling and route quality metrics.
International outbound call centers, customer callbacks, sales outreach, voice notifications, transaction alerts, and global PSTN reachability.
ASR, ACD, PDD, and MOS are monitored with intelligent routing and backup route failover to reduce unreachable calls and latency.
200+ countries and regions, with core strengths across Southeast Asia, North America, Europe, and key Middle East markets.
For target-country rates, test numbers, or route quality evaluation, use the website contact form.
Comprehensive quality assurance for every international call
A hybrid routing engine combining LCR (Least Cost Routing) and quality scoring automatically selects the optimal route. Supports dynamic route adjustment by country, time period, and traffic volume.
ASR (Answer Seizure Ratio) >60%. Multi-carrier backup with automatic failover ensures consistent answer rates.
PDD (Post Dial Delay) <2 seconds with 30+ global POP nodes for nearest-point access. Intelligent selection of the lowest latency path ensures fast call connection.
Supports G.722 HD voice codec with MOS >4.0. Real-time quality monitoring with automatic route switching when quality falls below threshold.
Multi-carrier redundancy with real-time route health monitoring. Millisecond-level automatic switchover to backup routes when a single route fails, completely transparent to users.
Supports Caller ID passthrough to ensure outbound calls display the correct originating number. Combined with DID numbers, you can display local numbers to increase answer rates.
Detailed Call Detail Records (CDR) generated in real time, including call duration, connection status, and quality metrics. Supports API retrieval and Webhook push notifications.
Supports T.38 FoIP protocol to ensure reliable IP fax transmission. Compatible with G.711 passthrough mode to accommodate different fax equipment requirements.
Complies with outbound calling regulations in each country and supports DNC (Do Not Call) list filtering to ensure compliant operations.
End-to-end quality monitoring ensuring reliability for every call
| ASR (Answer Seizure Ratio) | > 60% |
| PDD (Post Dial Delay) | < 2 seconds |
| MOS (Voice Quality Score) | > 4.0 |
| End-to-end Latency | 30-80ms (major Asia-Pacific countries) |
| Network Availability SLA | 99.99% |
| Failover | Multi-carrier backup, millisecond auto-switch |
| Protocol | SIP / RTP / SRTP |
| Codecs | G.711, G.729, G.722, Opus |
| DTMF | RFC 2833, In-band, SIP INFO |
| Fax | T.38, G.711 passthrough |
| CLI Passthrough | Supported (requires compliant DID numbers) |
| Concurrent Capacity | 10 - 10,000+ channels |
| Routing Strategy | LCR + quality scoring + time-period optimization |
| Failover | Multi-carrier backup with automatic failover |
| Monitoring | Real-time ASR/PDD/MOS monitoring with anomaly alerts |
| CDR | Real-time generation, API + Webhook push |
Outbound calling needs for sales and collection teams. High answer rates ensure every call effectively reaches customers. Combined with local DID numbers to increase willingness to answer.
Batch voice push for order confirmations, appointment reminders, logistics notifications, and more. High-concurrency capacity supports sending large volumes of voice notifications in a short time.
OTP voice verification code outbound calls requiring fast connection (low PDD) and reliable delivery. Ideal for registration, login, and payment scenarios.
Outbound bridging for international conference calls. Low-latency routes ensure smooth multi-party call experiences with mixed codec transcoding support.
Learn more about voice termination and related services