
Callcentric SIP Trunking
8.0#1 in sip trunking providersFrom $1.95 a monthFree planAndroidiOSWebExtension
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| Fact | Callcentric SIP Trunking | Flowroute |
|---|---|---|
| Founded | 2001 | 2007 |
| Headquarters | New York, New York, USA | Seattle, Washington, United States |
| Integrations | Official setup coverage includes 3CX, Asterisk, Zoiper, Bria Solo, Grandstream, Yealink, Cisco, Polycom, Snom, Linksys, Obihai and other SIP devices. | The FAQ lists integrations with 3CX, Asterisk and FreeSWITCH, and describes the APIs as software-agnostic. |
| Phone numbers | The service offers US and Canadian numbers, international numbers, toll-free numbers, alternate numbers and number porting. | Customers can buy or port local, toll-free and vanity numbers in the United States and Canada with caller ID, E911 and CNAM options. |
| Rating on GetVoIP | 3.8 out of 5 from 10 reviews; 70% would recommend. | 3.7 out of 5 from 33 reviews |
| Rating on Trustpilot | 3.8 out of 5 from 2 reviews. | 2.5 out of 5 from 5 reviews |
| Security controls | Listed account protections include allowed calling areas, IP whitelisting, maximum call-rate limits and two-point authentication. | Official materials describe IP-based authentication, outbound-rate limits, destination whitelists and anomaly monitoring to reduce toll fraud. |
Callcentric suits businesses using SIP-based IP PBXs or gateways that need outbound calling with variable per-minute charges. Its listed use cases include offices, call centers, IVR services, and calling card providers.
Flowroute suits businesses, developers, CPaaS providers, dealers, partners and contact centers that need voice, messaging or phone-number services through APIs or existing telephony systems. Its number management and fraud controls may suit teams that need to automate number setup or restrict outbound calling.