SIP.US Cloud SIP Trunking

C
C tier on SIP Trunking ProvidersScore 6.4 · #5 of 30
Android app
Yes
Free plan
Trial only
Paid plans from
$1/mo
Runs on
Android, api, iOS, Web
sip.us
The SIP.US Cloud SIP Trunking homepage

Summary

SIP.US Cloud SIP Trunking connects an existing PBX to cloud SIP trunking with flexible channels and no contracts. Its self-service control panel manages trunks, phone numbers, provisioning, billing, and call data records. 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 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 number database covers 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 toll-fraud protection can terminate unauthorized calls, disable international calling, and send alerts. Inbound calls can fail over to another IP-PBX or backup PSTN number. SIP.US supports SIP-enabled PBX systems and Microsoft Teams connections. The service is available only to businesses based in the United States and Canada.

Who it is for

It suits businesses in the United States or Canada that already have a PBX and need cloud SIP trunks. Organizations should account for one channel per concurrent call.

What is good

  • Control panel manages trunks, numbers, billing, and call records.
  • Unlimited outbound calling to the US48 and Canada per channel.
  • Call records can be downloaded as CSV files.
  • Inbound DID calls can fail over to a backup number.
  • Free trial is available.

What to know first

  • Service is limited to businesses in the US and Canada.
  • One channel is required per concurrent call.
  • No free plan is available.

Verdict

SIP.US is built to connect an existing PBX with cloud SIP trunking, with call records, DID routing, and fraud controls. Its business eligibility and channel-per-concurrent-call requirement are important planning limits.

SIP.US Cloud SIP Trunking plans and pricing

All plans
US48 Local DID $1/mo monthly per number $1.00/number one-time setup · CNAM included sip.us · 1 Oct 2026
Nomadic e911 Enhanced DID $2.50/mo monthly per number $2.00/number setup · 911 address registration sip.us · 1 Oct 2026
Toll-free DID $2.95/mo monthly per number PLUS $0.02/minute · $3.00/number setup sip.us · 1 Oct 2026
Business texting — 200 Messages $9.95/mo per month 200 messages · $0.07/message overage sip.us · 1 Oct 2026
Business texting — 500 messages $19.95/mo per month 500 messages · $0.04/message overage sip.us · 1 Oct 2026
SIP channels — Yearly Plans $19.99/yr per channel per month Unlimited US48 and Canada calling · No setup fee sip.us · 1 Oct 2026

Compared on SIP trunking providers

Free plan
Nosip.us
Pricing model
hybridsip.us
Number porting
Yessip.us
Emergency calling
Yessip.us
Toll-free numbers
Yessip.us
Encrypted signaling
Yessip.us

Facts

Product
SIP.US provides cloud SIP trunking that connects an existing PBX to reliable SIP trunking with flexible channels and no contracts.sip.us · 1 Oct 2026
Control panel
The self-service control panel manages SIP trunks, telephone numbers, provisioning, billing and call data records.sip.us · 1 Oct 2026
Calling coverage
Each SIP channel includes unlimited outbound calling to the US48 states and Canada and unlimited inbound calling to local numbers.sip.us · 1 Oct 2026
Concurrent calls
One SIP channel is required for every concurrent incoming or outgoing call.sip.us · 1 Oct 2026
Call records
CDRs are viewable near real-time, include today and the past year, and can be downloaded as CSV files.sip.us · 1 Oct 2026
DID coverage
SIP.US offers a searchable database of numbers across the US and Canada, with most DIDs provisioned instantly.sip.us · 1 Oct 2026
Bandwidth
Customers can choose their own broadband provider, and G.711 calls use approximately 85kbps up/down while G.729 is supported.sip.us · 1 Oct 2026
Fraud protection
Real-time international toll fraud protection can terminate unauthorized calls, disable international calling and alert the customer and Network Operations Center.sip.us · 1 Oct 2026
Integrations
Supported SIP-enabled PBX systems include 3CX, Asterisk, Elastix, Cisco, Avaya and Grandstream, plus open-source telephony applications.sip.us · 1 Oct 2026
Microsoft Teams
SIP.US connects SIP trunks with Microsoft Teams to provide enterprise voice and collaboration in one platform.sip.us · 1 Oct 2026
Redundancy
The service uses Tier-1 upstream providers and multiple US gateways to provide a redundant network and avoid single points of failure.sip.us · 1 Oct 2026
Failover
Inbound DID calls can route to primary and secondary IP-PBX systems or a backup PSTN number when routing fails.sip.us · 1 Oct 2026
Free trial
Free trial accounts include 60 minutes of outbound calling to anywhere in the US48, with a SIP trunk created after email confirmation.sip.us · 1 Oct 2026
Security
BCM One says it uses usernames, passwords and industry encryption methods to protect sensitive data transmission, while acknowledging no security practice is foolproof.sip.us · 1 Oct 2026
Eligibility
SIP.US services are available only to businesses based in the United States and Canada.sip.us · 1 Oct 2026
Support
Customers can use the knowledge base or call support at 800-566-9810.sip.us · 1 Oct 2026

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