About Cainiao Voice — Global International Voice Route Provider

Company Overview

Cainiao Voice specializes in international voice route services, providing high-quality SIP Trunk, Voice Termination, and DID Number solutions for enterprises expanding globally. Headquartered in China, we maintain POP nodes in Hong Kong and Singapore, with direct interconnections to 50+ carriers worldwide.

We are dedicated to providing stable, secure, and compliant international voice connectivity for clients in cross-border e-commerce, fintech, enterprise communications, and ride-hailing platforms. With deep carrier relationships and technical expertise, Cainiao Voice has become the preferred voice route partner for many global enterprises.

Global Coverage

Cainiao Voice has built a global voice network that provides ubiquitous communication connectivity for businesses.

Network coverage data as of May 2026

Key Service Regions

• Southeast Asia: Indonesia, Thailand, Vietnam, Philippines, Malaysia, Singapore
• East Asia: Japan, South Korea, Hong Kong, Taiwan
• Middle East: UAE, Saudi Arabia
• Europe: UK, Germany, France
• North America: USA, Canada

Technical Capabilities

Cainiao Voice leverages advanced VoIP technology to deliver enterprise-grade voice communication capabilities.

Codec Support

Support for G.711/G.729/G.722/Opus codecs, with flexible selection based on network conditions and business requirements, achieving the optimal balance between voice quality and bandwidth cost.

Secure Transport

SIP over TLS/SRTP encrypted transport ensures the security of signaling and media streams, preventing eavesdropping and tampering. DTLS-SRTP key negotiation is supported.

Premium Routes

CN2 premium routes to Hong Kong/Singapore POP nodes provide low-latency, high-stability international voice channels. End-to-end latency is controlled within 150ms.

PBX Compatibility

Compatible with mainstream PBX platforms including Asterisk, FreeSWITCH, 3CX, Cisco CUCM, and Avaya Aura. Standard SIP protocol integration for plug-and-play deployment.

Team & Support

Cainiao Voice maintains an experienced VoIP technical team that provides comprehensive support services to our clients.

• 24/7 bilingual support (Chinese & English) with average response time < 15 minutes
• Technical team with 10+ years of VoIP industry experience, with deep understanding of SIP/RTP/WebRTC protocol stacks
• Dedicated implementation team assisting with PBX integration, route configuration, number provisioning, and the entire onboarding process
• Regular voice quality reports to help clients continuously optimize their communication experience

Core Values

• Boundless Connectivity: Breaking down geographic and technical barriers to make global communication accessible
• Quality First: Committing to the highest standards in voice services, from route quality to technical support, excellence in every detail
• Compliance & Transparency: Strictly adhering to telecom regulations in every jurisdiction, maintaining transparent pricing and service terms
• Continuous Innovation: Constantly exploring new technologies and solutions to help clients maintain a competitive edge in communications