Unified business communications built on intelligent, business-grade SIP infrastructure

Delivered over Singtel’s private MPLS network and Asia’s leading IP VPN, Singtel SIP Trunking delivers superior voice connections suitable for IP PBX, Skype for Business, Teams and other unified communications solutions for your offices across the region. 



High-quality voice

SIP trunking

Clear and reliable communications on all platforms including calls, fax, as well as compatible credit card terminals.

Scalable and flexible deployment


Deploy your phone systems over dedicated circuits or existing Singtel networks, starting with as low as 5 channels.

Maximum availability


Intelligent trunk routing protocols and resilient network infrastructure ensure that your services are always up.


Free on-net calls


Enjoy reliable and unlimited on-net intra-office calls with exceptional voice quality over a secure private network.

Least-cost routing


Get preferential IDD rates for on- to off-net customer office calls to the rest of the world with least-cost routing via our strategic regional partnerships.

Value added services


Direct dial-in (DDI), caller number display, and auto call forwarding.

Consolidated trunk groups

pbx systems

Singtel SIP Trunking allows your company’s calls to be consolidated into a single trunk group, which is particularly useful for call centres with PBX systems.

Auto failover


Geographic redundancy and auto failover to ensure high availability for your phone network.

Local number portability


Ensure a smooth transition with local number portability to retain your existing numbers.

How does it work?

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