Callcentric SIP Trunking
Callcentric SIP Trunking: A low-commitment SIP trunking option for businesses with variable call volumes. Ranked #18 of 28 in SIP Trunking Providers by our editors (7.6/10); pricing: Free plan; best for small businesses testing SIP trunking cheaply.
At a glance
- Editor score7.6 / 10
- PricingFree plan
- Best forSmall businesses testing SIP trunking cheaply
- Free planYes
- Emergency callingYes
- Founded2001 · New York, New York, USA
- Facts checked19 Sep 2026
Where it wins
- No monthly or setup fee on the Pay Per Call plan
- DIDs available in the US, Canada, and over 35 countries
- Supports PBXs, IP phones, ATAs, and softphones
Where it doesn't
- Calling charges vary by destination and require an account deposit
- Secure SIP communications and SIPS are not supported
- Emergency calling depends on regional availability and provisioning
Our verdict on Callcentric SIP Trunking
Callcentric SIP Trunking is a pay-per-call voice service for businesses using SIP-based IP PBX systems. It suits small businesses evaluating SIP trunking with variable call volumes, especially those that want to avoid a monthly plan fee. The service supports worldwide outbound calling, business DID/DDI numbers in the United States, Canada, and over 35 other countries, local number portability, toll-free numbers, and emergency calling in the United States, Canada, and Puerto Rico.
Pricing is centered on the Pay Per Call plan. It has no monthly fee and no setup fee, while outbound calls are billed at per-minute rates that vary by destination. The plan includes three outgoing channels and allows unlimited maximum channels, and it requires an account deposit. This structure can fit an organization that wants to start with limited fixed costs, but businesses with consistently high or predictable usage should compare destination-based per-minute charges against a recurring plan before choosing it.
Its ecosystem fit is broad for a SIP trunking service: Callcentric supports SIP-based IP PBX systems, IP phones, Analog Telephone Adapters, desktop softphones, and mobile softphones, with web, iOS, and Android platforms listed. Number porting, toll-free numbers, IP whitelisting, and maximum call-rate security controls add practical coverage for business deployments. Emergency service is subject to regional availability and provisioning requirements, while SIPS and secure SIP communications are not supported. Choose Callcentric for low-commitment SIP trunking across supported devices and regions; organizations requiring secure SIP communications should consider an alternative.
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Callcentric SIP Trunking pricing
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Callcentric SIP Trunking fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Pricing model | Per-minute |
| Concurrent channels | 3 channels |
| Number porting | Yes |
| Emergency calling | Yes |
| Toll-free numbers | Yes |
| Encrypted signaling | No |
| Deployment | Cloud, Mobile |
| Platforms | Web, iOS, Android |
| Integrations | 5 integrations: SIP-based IP PBX systems, IP phones, Analog Telephone Adapters, Desktop softphones, Mobile softphones |
| Pricing | Free plan (source) |
| Website | callcentric.com |
| Facts checked | 19 Sep 2026 |
Callcentric SIP Trunking integrations
Callcentric SIP Trunking lists 5 integrations on its own site.
- SIP-based IP PBX systems
- IP phones
- Analog Telephone Adapters
- Desktop softphones
- Mobile softphones
Alternatives to Callcentric SIP Trunking
- IPComms SIP TrunkingA low-cost SIP trunk with encryption, E911, failover, and broad PBX integrations.9.4
- Telnyx SIP TrunkingLow-usage SIP trunking with API setup, calling features, and pay-as-you-go pricing.9.3
- BulkVS SIP TrunkingA low-cost SIP option for North American numbers, PBXs, and carrier workflows.9.2
See all Callcentric SIP Trunking alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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