Callcentric SIP Trunking
- 1Runs onAndroid, Browser, iOS, Linux, Mac, self-hosted, Web, Windows
- 2CostsFree plan
- 3Pricing modelper-minute
- 4Concurrent channels3 channels
- 5Number portingYes
- 6Emergency callingYes
- 7Toll-free numbersYes
- 8Encrypted signalingNo
Overview
Callcentric SIP Trunking's Pay Per Call plan lets businesses place worldwide calls from SIP-based IP PBXs or gateways. The plan has no monthly fee or included minutes; outbound calls are charged at variable per-minute rates, while calls to other Callcentric members are free. It includes three channels, allows unlimited maximum channels and charges no additional channel fee. An account deposit can be as low as $5.00. Business numbers are available in the USA, Canada and over 35 other countries. Listed uses include offices, call centers, IVR services and calling card providers. Callcentric says most SIP/2.0 hardware and software should be compatible, and names 3CX, Asterisk, freePBX, Bria, ZoIPer and LinPhone among options users have used. Compatible devices need specified SIP, RTP, authentication, proxy, DNS and codec support. The service supports Android, iOS, Linux, macOS, web, Windows, extensions and self-hosted setups. US/Canada toll-free numbers are listed at $3.95 setup and $3.95 per month.
Who it is for
It suits businesses that want outbound SIP trunking with variable per-minute calling costs and no monthly plan fee. It may also fit users with compatible SIP equipment who need business numbers in the listed countries.
What is good
- No monthly fee and no included-minute restriction.
- Three included channels with unlimited maximum channels.
- Calls to other Callcentric members are free.
- Free support through trouble tickets is available.
What to know first
- No minutes are included in the plan.
- Per-minute calling prices vary.
- Audio and SIP communications using RTPS or SIPS are unsupported.
- Toll-free numbers cost $3.95 setup and $3.95 per month.
Verdict
Pay Per Call offers outbound SIP calling without a monthly plan charge, but call costs vary by destination and usage. Check device requirements and the transport-encryption limit before relying on it.
Callcentric SIP Trunking plans and pricing
All plansCompared on SIP trunking providers
- Free plan
- Yescallcentric.com
- Pricing model
- per-minutecallcentric.com
- Concurrent channels
- 3 channelscallcentric.com
- Number porting
- Yescallcentric.com
- Emergency calling
- Yescallcentric.com
- Toll-free numbers
- Yescallcentric.com
- Encrypted signaling
- Nocallcentric.com
Facts
- What it does
- Pay Per Call lets businesses place worldwide calls from SIP-based IP PBXs or gateways using SIP trunking.callcentric.com · 30 Sept 2026
- Business numbers
- Callcentric offers business phone numbers in the USA, Canada, and over 35 other countries.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
- Calling costs
- The plan has no monthly fee and no included minutes; per-minute prices vary, and calls to other Callcentric members are free.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
- Named integrations
- The compatibility FAQ lists 3CX, Asterisk, freePBX, Bria, ZoIPer, and LinPhone among software users have successfully used.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
- Security controls
- Account protections include allowed calling destinations and IP whitelisting globally or per extension, along with advice to use complex passwords.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
- Privacy and call access
- Callcentric says it does not listen in on calls or have access to users' login passwords.callcentric.com · 30 Sept 2026
- Support
- Callcentric provides a maintained knowledge base, BYOD setup guides, and free support through trouble tickets.callcentric.com · 30 Sept 2026
- 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.callcentric.com · 30 Sept 2026
Company
- Founded
- 2001callcentric.com · 28 Sept 2026
- Headquarters
- New York, New York, USAcallcentric.com · 28 Sept 2026
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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