SIP.US Cloud SIP Trunking

SIP.US Cloud SIP Trunking connects an existing PBX to cloud SIP trunking, with flexible channels and no contracts. Its self-service panel handles trunks, telephone numbers, provisioning, billing and call data records. Each channel includes unlimited outbound calls to the US48 states and Canada and unlimited inbound calls to local numbers; one channel is needed for each concurrent incoming or outgoing call. Records are viewable near real time, cover today and the past year, and can be downloaded as CSV files. A searchable database covers numbers in the US and Canada, and most DIDs are provisioned instantly. Customers choose their broadband provider; G.711 calls use approximately 85kbps up/down, and G.729 is supported. International fraud protection can terminate unauthorized calls, disable international calling and send alerts. Inbound calls can route to primary or secondary IP-PBX systems or a backup PSTN number if routing fails. The service supports SIP-enabled PBX systems and Microsoft Teams connections. It is available only to businesses based in the United States and Canada. SIP channel plans are listed at $19.99 a year for yearly plans and $24.95 a month for month-to-month service.

SIP.US offers PBX connectivity with channel-based calling, call records and failover routing. Businesses outside the United States and Canada are not eligible.

It is for businesses based in the United States or Canada that have an existing PBX and need SIP trunking. Organizations using supported SIP-enabled PBX systems or Microsoft Teams may find its connection options relevant.

SIP.US Cloud SIP Trunking connects an existing PBX to cloud calling for businesses in the United States and Canada. It fits organizations that want control over channels, phone numbers and routing while retaining systems such as 3CX, Asterisk, Cisco or Microsoft Teams. The service is most compelling for predictable North American calling and resilient PBX connectivity, but channel sizing and regional eligibility are important constraints.

Overview

SIP.US puts trunk provisioning, telephone-number management, billing and call-data records in a self-service control panel. Call records appear near real time, cover the current day and the prior year, and export to CSV, giving administrators a practical way to inspect usage and retain reports. Number porting, emergency calling, toll-free numbers and encrypted signaling are supported.

Services are restricted to businesses based in the United States or Canada. Businesses elsewhere need a different carrier, regardless of their PBX or calling requirements.

Key features

Each SIP channel includes unlimited outbound calling to the US48 states and Canada and unlimited inbound calling to local numbers. One channel is required for every simultaneous incoming or outgoing call. That makes the pricing model easy to understand, but offices and contact centers must order for peak concurrency: too few channels can prevent overlapping calls, while too many create unused capacity.

A searchable database covers US and Canadian numbers, and most DIDs provision instantly. Inbound DID calls can fail over to a secondary IP-PBX or a backup PSTN number when the primary route fails. Tier-1 upstream carriers and multiple US gateways provide network redundancy, reducing dependence on a single gateway.

Customers choose their own broadband provider. G.711 calls use approximately 85kbps upstream and downstream, while G.729 is supported for deployments that need another codec option. Real-time international toll-fraud protection can terminate unauthorized calls, disable international calling and alert both the customer and the Network Operations Center. Supported SIP-enabled systems include 3CX, Asterisk, Elastix, Cisco, Avaya, Grandstream and other open-source telephony applications. SIP.US can also connect SIP trunks to Microsoft Teams, combining enterprise voice and collaboration in one environment.

BCM One says usernames, passwords and industry encryption methods protect sensitive transmission, while acknowledging that no security practice is foolproof. A knowledge base and phone support at 800-566-9810 cover operational help.

Pricing

SIP channels cost $24.95 per channel per month on the month-to-month plan, or $19.99 per channel per month on the yearly plan; both include unlimited US48 and Canada calling and no setup fee. The yearly option lowers the channel rate but commits the buyer to an annual term, while month-to-month is better for changing capacity.

A US48 Local DID costs $1 per number monthly, plus a $1 one-time setup fee, with CNAM included. Nomadic e911 Enhanced DID is $2.50 per number monthly with a $2 setup fee and 911 address registration. Toll-free DIDs cost $2.95 per number monthly, plus $0.02 a minute and a $3 setup fee.

Business texting plans are $9.95 monthly for 200 messages with $0.07 overage, $19.95 for 500 with $0.04 overage, $29.95 for 1,000 with $0.02 overage, and $79.95 for 3,000 with 0.012 USD overage. The lower tiers suit light two-way messaging; higher tiers reduce overage cost for larger volumes. SimpleFAX™ Service costs $24.95 per fax line monthly, includes 1,000 pages, charges $0.10 per additional page and has a $25 port fee. There is no free plan, but a free trial is offered.

Platforms

SIP.US supports Android, iOS, web access and an API. Its PBX compatibility and Teams connection make it more suitable for communications teams integrating existing infrastructure than for buyers seeking a standalone consumer calling app.

Who it's for

Choose SIP.US if your US or Canadian business already operates a compatible PBX, needs unlimited domestic calling per channel, and values DID choice, near-real-time records and failover routing. It is less suitable for organizations outside those countries, for teams that need a bundled all-in-one suite, or for traffic whose concurrency is difficult to forecast.

Pros and cons

• Pros: Unlimited US48 and Canada calling per channel; flexible local and toll-free number inventory; primary, secondary and PSTN failover options; toll-fraud controls; broad PBX and Teams compatibility; annual channel pricing without setup fees.
• Cons: Eligibility is limited to US and Canadian businesses; every concurrent call consumes a channel; DID setup fees and toll-free per-minute charges add costs; texting overages can be significant on the smallest plans; no free plan.

Alternatives

SIP Trunking Providers is the broader shortlist for comparing carriers. Pick Twilio Segment when a freemium customer-data platform with web, iOS and Android support, a free tier and 700-plus integrations matters more than SIP trunking. Callcentric SIP Trunking suits buyers wanting a free plan and pay-per-call pricing across a wider range of platforms. Choose Sangoma Carrier Voice for wholesale, usage-based or à la carte voice services without large minimums or long contracts. SendFax.to is the alternative for dedicated low- or high-volume faxing. Gamma Horizon is another paid cloud phone-system option with sales-led pricing. VoIP.ms SIP Trunking offers an inbound channel at $23 a month. Bandwidth Messaging API is aimed at API messaging, including U.S. 10DLC and short-code SMS. BulkVS SIP Trunking uses usage-based North American inbound and outbound voice pricing.

Verdict

SIP.US is a strong choice for US and Canadian businesses keeping an existing PBX and needing predictable domestic calling, flexible numbers and practical failover. Its main reason to look elsewhere is the channel-per-concurrent-call model, combined with geographic eligibility and extra setup or usage charges on some services.