Callcentric SIP Trunking review
A low-commitment SIP trunking option for businesses with variable call volumes.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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.
Callcentric SIP Trunking pros and cons
- 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
Callcentric SIP Trunking fact sheet, pricing and score →
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