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Colt SIP Trunking

API—OSS—FREE—DOCS4/5
CS5.4#16 of 30
outWeb—Windows—Mac—Linux—Android—iOS

Ranked in SIP Trunking Providers ·No free plan on record

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About

Colt SIP Trunking is ranked #16 of 30 in SIP trunking providers on Inferse. It runs on Web.

Compared on SIP trunking providers

Pricing model
hybridcolt.net
Number porting
Yescolt.net
Emergency calling
Yescolt.net
Encrypted signaling
Yescolt.net

Facts

What it does
SIP Trunking delivers voice communications over the internet and lets businesses make and receive calls through an IP PBX.colt.net · 5 Oct 2026
Cost savings
Colt says the service can reduce monthly costs by up to 50%.colt.net · 5 Oct 2026
Integrations
It interoperates with Genesys Cloud, Cisco Webex, Talkdesk, Twilio Flex, Avaya Experience Platform, NICE CXone, Microsoft Teams and Zoom.colt.net · 5 Oct 2026
Resilience
Colt states 99.999% uptime, supported by geo-redundant architecture and automatic failover.colt.net · 5 Oct 2026
Voice security
The service uses TLS and SRTP to encrypt signalling and voice media.colt.net · 5 Oct 2026
Numbering
Customers can retain existing phone numbers or obtain new numbers in multiple countries, with number porting supported in most countries.colt.net · 5 Oct 2026
Online management
SIP On Demand supports online requests to port numbers or add phone numbers, and Colt Online can invoke or revoke services upgraded with Disaster Recovery.colt.net · 5 Oct 2026
Regulatory features
Colt lists emergency call routing, lawful compliance and data retention, and says emergency calling includes location-based routing to meet local regulations.colt.net · 5 Oct 2026
Compatibility
Colt describes the service as compatible with leading IP PBXs and unified communications platforms.colt.net · 5 Oct 2026
Intended customers
Colt positions SIP Trunking as a scalable voice solution for modern enterprises.colt.net · 5 Oct 2026
Support
Colt directs prospective customers to contact its team or talk to an expert about the service.colt.net · 5 Oct 2026
Company security certifications
Colt lists ISO/IEC 27001:2022 for information security management and ISO/IEC 27701:2019 for privacy information management.colt.net · 5 Oct 2026
Company background
Colt says it was founded in London over 30 years ago and is privately owned.colt.net · 5 Oct 2026

Company

Headquarters
London, United Kingdomcolt.net · 28 Sept 2026

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Where it ranks on Inferse

Sources