Five Ways to Connect a Modern Phone System to the PSTN — Comparing 3-Year Cost
I’m comparing the three year cost of ownership for a modern phone system that is connected to the public phone network (PSTN) in five different ways:
- Traditional Phone Lines (POTS)
- Metered SIP Trunks (VoIP)
- Hybrid (POTS/VoIP combo)
- Digital (ISDN PRI)
- Hosted (VoIP Phone system in the Cloud)
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