Callcentric SIP Trunking vs ClearlyIP SIP Trunking

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.

ClearlyIP SIP Trunking has no write-up on Specifiction yet; its figures are above.