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Starlink VoIP and Phone Service Setup UK

Set up a VoIP phone service with your Starlink internet connection in the UK. This guide covers VoIP compatibility, recommended providers, call quality optimisation, and power backup for reliable phone service during Starlink outages.

Starlink uses CGNAT (Carrier-Grade Network Address Translation) which affects VoIP and phone service setup. CGNAT means multiple Starlink users share a single public IP address, preventing incoming connections without configuration. For VoIP phone service you need either: Starlink Bypass Mode with a third-party router that supports VPN or SIP ALG, a VoIP provider with CGNAT-compatible configuration, or a VPN tunnel to bypass CGNAT. Recommended UK VoIP providers for Starlink: Voipfone (CGNAT compatible, £5/month), Sipgate (basic free account), Vonage (Starlink tested, £10/month), and Skyline Communications (UK business VoIP). Starlink typical latency 25-40ms is acceptable for VoIP - the minimum is under 150ms one-way. Starlink jitter (latency variation) averages 5-15ms which is within the 30ms maximum for good call quality. Packet loss on Starlink averages 0.1-0.5% - below the 1% threshold that degrades call quality. To ensure reliability configure Quality of Service (QoS) on your router to prioritise VoIP traffic over browsing and streaming.

Step 1: Enable Starlink Bypass Mode in the Starlink app (Settings > Router > Bypass Mode). Step 2: Connect a third-party router that supports QoS/VLAN/VPN (recommended: TP-Link Archer AX72 £80, Asus RT-AX86U £200, or Ubiquiti Dream Machine £250). Step 3: Configure the router WAN port to the Starlink Ethernet adapter. Step 4: Sign up for a UK VoIP provider (Voipfone for residential, Sipgate for business). Step 5: Configure the VoIP ATA (Analogue Telephone Adapter) with the provider SIP credentials. ATA devices: Grandstream HT801 (£50) or Cisco SPA112 (£60). Step 6: Connect a standard UK telephone to the ATA phone port. Step 7: Test call quality and adjust QoS settings if needed. Power backup: install a UPS (Uninterruptible Power Supply) for the Starlink dish, router, and VoIP ATA to maintain phone service during power cuts. A 600VA UPS (£80-£120 from APC or Eaton) provides 30-60 minutes runtime.

Specifications and Comparison

VoIP Provider CGNAT Compatible Monthly Cost E911 Support
Voipfone Yes £5/month Yes
Sipgate Yes Free (basic) Yes
Vonage Yes £10/month Yes
Skyline Comms Yes £15/month Yes

FAQ

. For more information see our Starlink Bypass Mode Setup.

Last updated: 2026-05-31.

External Resources

For further information consult authority guidelines at the Royal Society for the Prevention of Accidents.