SIP trunking and Hong Kong business phone numbers (+852)
Connect your teams in Central, Admiralty, Wan Chai, Kowloon, Tsim Sha Tsui, Kwun Tong and the New Territories with +852 local and 800 toll-free numbers, SIP trunking, hosted PBX, contact centre and SD-WAN. One AstraQom contract, OFCA-aware provisioning and number porting, HKD or USD billing and 24/7 multilingual support for APAC regional headquarters.
Available services
Every AstraQom service is available in Hong Kong with local provisioning and compliance handled for you.
Hosted PBX
A complete cloud phone system — no hardware, no headaches.
Virtual PBX
A lightweight virtual phone system — perfect for distributed teams.
SIP Trunks
Carrier-grade voice trunks for any PBX or contact center.
Local Phone Numbers
Local presence in every market — without opening an office.
Virtual Receptionist
Real humans answering your phone, 24/7, in your brand voice.
Voice & SMS Broadcast
Reach thousands in minutes — voice or SMS, on demand.
Unified Communications (UCaaS)
Voice, video, chat and meetings — one platform, one bill.
SD-WAN
Application-aware, secure connectivity across every site.
Contact Center (CCaaS)
Turn every interaction into a sales or service win.
IoT Solutions
Monitor what matters — agriculture, facilities, cold chain and more.
Legal Virtual Assistant
Bilingual legal answering for attorneys and law firms — 24/7/365.
Frequently asked questions
What is SIP trunking and how does it work in Hong Kong?+
SIP trunking replaces traditional phone lines with a secure internet connection between your PBX and the public telephone network. In Hong Kong, AstraQom delivers local +852 numbers and outbound voice over Tier-1 routes, in Hong Kong and Kowloon and nationwide.
Can I keep my existing Hong Kong phone numbers?+
Yes. We port your existing fixed, mobile and toll-free Hong Kong numbers from any licensed operator with zero downtime. Most ports complete in 2–4 weeks.
How fast can I get a +852 number?+
Most numbers activate within 1–3 business days. Toll-free and special numbers can require extra local KYC — we handle the paperwork end to end.
How reliable is the service in Hong Kong?+
We use geo-redundant SBCs, multiple upstream carriers and QoS-aware routing, backed by a 99.9% uptime SLA. 4G/5G failover and SD-WAN are available for sites that need guaranteed voice quality.
What equipment do I need?+
Most businesses need only an IP-PBX, a softphone app or a SIP-compatible handset. With a legacy PBX, we supply an enterprise SBC or ATA adapter so you can keep your existing phones.
Is the service compliant with Hong Kong telecom regulations?+
Yes. AstraQom operates under the OFCA framework and handles KYC, numbering and emergency-calling compliance during onboarding, so you get a licensed route without the regulator paperwork.
How much does SIP trunking cost in Hong Kong?+
Trunks start from $9 per channel per month with per-second call billing. You only pay for active channels, and volume or multi-year commitments unlock significant discounts.
Other countries in the region
Ready to launch in Hong Kong?
Send us your requirements or your current telecom invoice. We come back within one business day with a like-for-like comparison and a tailored proposal.
Talk to a Hong Kong telecom expert