ISDN lines have been part of communication solutions for the business community for many years. ISDN stands for Integrated Services Digital Network and provides fast data transfer.

If your business cannot access stable internet connectivity, ISDN lines may be used as a replacement for SIP trunks. The ISDN lines can be integrated to a VOIP PBX, known as an IP PBX, and your business will then be able to benefit from VOIP-specific features of increased functionality coupled with both low maintenance and call costs. These benefits will be countered by the cost of the ISDN lines.

ISDN lines can also be used to add resilience to your telephony solution, by providing the fall back solution in the event of a fault to your main telephony system. This particular option may be applicable to businesses with very immediate and large-scale telephony needs.

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