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VoIP.ms SIP Trunking

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What VoIP.ms SIP Trunking is

VoIP.ms SIP Trunking connects an IP PBX or another compatible SIP system to VoIP.ms for inbound and outbound internet calling. Businesses can connect an existing PBX rather than replacing it. Outbound calls can be made without buying a phone number when a valid caller ID is configured, while inbound calls from the phone network require a DID routed to the SIP setup. SIP connections support UDP or TCP, with account settings for IP address authentication, codecs, DTMF, and NAT. SIP-TLS and SRTP can encrypt signaling and audio. Call Detail Records and detailed logs show calls, routing, and failover events, and customers can configure an alternate route when the primary route is unavailable. Channel capacity can be adjusted for simultaneous calls, with tailored capacity handled by Sales. Compatible systems include SIP PBXs, IP phones, gateways, softphones, and SBCs. The Inbound SIP Trunk plan is $23 a month per channel, while pricing is also available on request. A Microsoft Teams voice connector starts at $4.50 per license.

Who it suits

It suits MSPs, resellers, businesses with an existing PBX, and ISPs or service providers. It is also relevant to organizations connecting SIP-compatible phones or software.

What it does well

  • Keeps compatible existing PBX systems
  • Supports encrypted SIP-TLS and SRTP
  • Configurable failover and detailed call logs
  • Adjustable channels for simultaneous calls
  • 24/7 support in three languages

What to know first

  • Paid service with pricing on request
  • Inbound calls require a routed DID
  • Capacity planning goes through Sales
  • Teams connector costs extra

Plans

PlanBilled and limitsPrice
Inbound SIP TrunkPer Channel · Inbound SIP trunk channel$23 a month

As main.voip.ms lists them, read 4 Oct 2026. The maker's own page has the final word.

Verdict

VoIP.ms SIP Trunking provides configurable inbound and outbound connectivity for existing SIP systems, with encryption, monitoring, and failover controls. The per-channel plan price and DID requirement matter when planning inbound service.

Facts from VoIP.ms SIP Trunking's own pages

Adjustable channels
The number of SIP trunk channels can be adjusted to support multiple simultaneous calls; the page directs customers to Sales for tailored capacity. · main.voip.ms, 4 Oct 2026
Call controls
SIP account settings include IP address authentication and codec, DTMF, and NAT options. · main.voip.ms, 4 Oct 2026
Encryption
SIP-TLS and SRTP encryption can be enabled for SIP signaling and audio. · main.voip.ms, 4 Oct 2026
Existing PBX support
Customers can connect a compatible existing PBX without replacing their phone system. · main.voip.ms, 4 Oct 2026
Failover
Customers can configure failovers for when the primary route is unavailable. · main.voip.ms, 4 Oct 2026
Founded
2007 · main.voip.ms, 28 Sept 2026
Headquarters
Montreal, Canada · main.voip.ms, 28 Sept 2026
Inbound calling requirement
Receiving inbound calls from the phone network requires a DID routed to the SIP setup. · main.voip.ms, 4 Oct 2026
Integrations and compatible systems
The service can connect to SIP-compatible PBX systems, IP phones, gateways, softphones, and SBCs; VoIP.ms also provides configuration guides for third-party systems. · main.voip.ms, 4 Oct 2026
Intended customers
The SIP trunking page identifies MSPs and resellers, businesses with an existing PBX, and ISPs and service providers as user groups. · main.voip.ms, 4 Oct 2026
Microsoft Teams
VoIP.ms offers a Microsoft Teams voice connector, with pricing starting at $4.50 per license. · voip.ms, 4 Oct 2026
Monitoring
Call Detail Records and detailed call logs show incoming and outgoing calls, routing, and failover events. · main.voip.ms, 4 Oct 2026
Outbound only
Outbound calling is available without purchasing a phone number if a valid caller ID is configured. · main.voip.ms, 4 Oct 2026
SIP connection options
SIP connections can use UDP or TCP, and settings can be configured for individual SIP accounts. · main.voip.ms, 4 Oct 2026
Support
VoIP.ms says technical support is available 24 hours a day, 7 days a week, in English, French, and Spanish. · main.voip.ms, 4 Oct 2026
What it does
Connects an IP PBX or other compatible SIP system to VoIP.ms for inbound and outbound calling over an internet connection. · main.voip.ms, 4 Oct 2026

Where VoIP.ms SIP Trunking stands on Freedom251

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