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Many businesses today are switching to IP (VoIP) based PBX's. With Callcentric's Pay Per Call rate plan you can place calls worldwide from any SIP based IP PBX that supports SIP Trunking.
Callcentric also provides business phone numbers (DID / DDI) in the USA, Canada, and over 35 other countries. Pleases see our phone number products page for more information.
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