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Telesystem's ISDN PRI circuit is an all-digital business service that interconnects your compatible electronics to the Public Switched Telephone Network (PSTN).  This solution is often more cost-effective than having numerous individual business lines. Just one ISDN PRI circuit from Telesystem provides your business with up to 23 individual 2-way channels for voice communication and reliable communications that can be scaled on a per channel basis.


  • Voice lines
  • High-speed fax transmission
  • Computer telephony integration for call centers 

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