Callcentric SIP Trunking

Callcentric SIP Trunking is ranked #2 of 20 in sip trunking providers on The Geeks Club. It runs on Android, Browser extension, iOS, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Callcentric SIP Trunking plans and pricing

All plans

Pay Per Call Free Month to month: $0.00; calling is charged at variable per-minute rates; account deposit as low as $5.00 Outbound only · 3 included channels · unlimited maximum channels · 0 included minutes · $0.00 additional channel fee callcentric.com · 30 Sept 2026

Compared on sip trunking providers

Free plan: Yes
Pricing model: per-minute
Concurrent channels: 3 channels
Number porting: Yes
Emergency calling: Yes
Toll-free numbers: Yes
Encrypted signaling: No

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Callcentric SIP Trunking

What it does: Pay Per Call lets businesses place worldwide calls from SIP-based IP PBXs or gateways using SIP trunking.
Business numbers: Callcentric offers business phone numbers in the USA, Canada, and over 35 other countries.
Use cases: The Pay Per Call plan lists business and office, call centers, IVR services, calling card providers, and any purpose as supported usage types.
Calling costs: The plan has no monthly fee and no included minutes; per-minute prices vary, and calls to other Callcentric members are free.
No commitment: The page describes Pay Per Call as having no monthly fees and no commitments, with an account deposit as low as $5.00.
BYOD compatibility: Callcentric says most SIP/2.0 hardware and software should be compatible and that it does not restrict customers to only equipment it is comfortable with.
Named integrations: The compatibility FAQ lists 3CX, Asterisk, freePBX, Bria, ZoIPer, and LinPhone among software users have successfully used.
Supported device requirements: For compatible devices, the FAQ lists SIP 2.0, RTP over UDP, DIGEST MD5 authentication, a fixed outbound proxy, DNS SRV, and G.711 and/or G.729.
Security controls: Account protections include allowed calling destinations and IP whitelisting globally or per extension, along with advice to use complex passwords.
Transport encryption limit: Callcentric says it does not support audio or SIP communications using RTPS or SIPS, while secure credentials are encrypted during REGISTER and INVITE according to SIP.
Privacy and call access: Callcentric says it does not listen in on calls or have access to users' login passwords.
Support: Callcentric provides a maintained knowledge base, BYOD setup guides, and free support through trouble tickets.
Number add-ons: US/Canada toll-free numbers are listed at $3.95 setup and $3.95 per month; US/Canada and international phone number pricing varies by product or country.
Founded: 2001
Price from: Free

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Where it ranks on The Geeks Club

Best SIP Trunking Providers in 2026#2 of 20

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Sources

callcentric.com/features/sip_trunking· checked 30 Sept 2026
callcentric.com/rate/plans/pay_per_call· checked 30 Sept 2026
callcentric.com/faq/8· checked 30 Sept 2026
callcentric.com/faq/22/292· checked 30 Sept 2026
callcentric.com/faq/8/373· checked 30 Sept 2026
callcentric.com/support/device/security· checked 30 Sept 2026
callcentric.com/support/· checked 30 Sept 2026