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VoIP.ms SIP Trunking
Montreal, Canada
What it is
VoIP.ms SIP Trunking connects an IP PBX or another compatible SIP system to VoIP.ms for inbound and outbound calls over an internet connection. Businesses can connect an existing PBX rather than replace their phone system. Outbound calling is available without buying a phone number when a valid caller ID is configured; inbound calls from the phone network require a DID routed to the SIP setup. Connections can use UDP or TCP, with settings for individual SIP accounts such as IP address authentication, codecs, DTMF, and NAT. SIP-TLS and SRTP can be enabled to encrypt signaling and audio. Call Detail Records and detailed logs show incoming and outgoing 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. The service connects to SIP-compatible PBXs, IP phones, gateways, softphones, and SBCs, and VoIP.ms provides configuration guides for third-party systems. Pricing is on request; the Inbound SIP Trunk plan is $23 a month per channel. A Microsoft Teams voice connector starts at $4.50 per license.
For and against
For
- Can connect an existing PBX without replacing it.
- Supports UDP or TCP SIP connections.
- SIP-TLS and SRTP encryption can be enabled.
- Call logs include routing and failover events.
- Channel capacity can be adjusted for simultaneous calls.
Against
- Inbound calls require a DID routed to the SIP setup.
- Pricing is on request.
- Inbound SIP Trunk costs $23 a month per channel.
The verdict
VoIP.ms SIP Trunking links compatible phone systems to internet-based inbound and outbound calling, with configurable security, routing, and channel capacity. Pricing is on request, and inbound phone-network calls require a DID routed to the SIP setup.
Who it suits
It suits businesses with an existing PBX, as well as MSPs, resellers, ISPs, and service providers. It can also fit organizations connecting other SIP-compatible systems to internet calling.
Plans and prices
Inbound SIP Trunk
Inbound SIP trunk channel
Read 4 Oct 2026 · www5.voip.ms
On the record
- 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 · read 4 Oct 2026
- Call controls
- SIP account settings include IP address authentication and codec, DTMF, and NAT options.main.voip.ms · read 4 Oct 2026
- Encryption
- SIP-TLS and SRTP encryption can be enabled for SIP signaling and audio.main.voip.ms · read 4 Oct 2026
- Existing PBX support
- Customers can connect a compatible existing PBX without replacing their phone system.main.voip.ms · read 4 Oct 2026
- Failover
- Customers can configure failovers for when the primary route is unavailable.main.voip.ms · read 4 Oct 2026
- Inbound calling requirement
- Receiving inbound calls from the phone network requires a DID routed to the SIP setup.main.voip.ms · read 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 · read 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 · read 4 Oct 2026
- Microsoft Teams
- VoIP.ms offers a Microsoft Teams voice connector, with pricing starting at $4.50 per license.voip.ms · read 4 Oct 2026
- Monitoring
- Call Detail Records and detailed call logs show incoming and outgoing calls, routing, and failover events.main.voip.ms · read 4 Oct 2026
- Outbound only
- Outbound calling is available without purchasing a phone number if a valid caller ID is configured.main.voip.ms · read 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 · read 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 · read 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 · read 4 Oct 2026
