SIP Trunking / Digital Cross Connect vs Hosted PBX
SIP Trunking is used when the customer's phone system is capable of taking direct SIP connections.
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Advantage: Savings over legacy phone service, ability to provision remote market phone numbers.
Digital Cross Connect is a simple way to say "Plug in a SIP to analog or PRI/T1 gateway device and connect to the customer phone system as though it was legacy phone service.
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Advantage: Savings over legacy phone service, ability to provision remote market phone numbers.
Hosted PBX is where IP phones at the customer's location(s) are connected to a PBX residing in our data center.
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Advantage: Ability to have phones at multiple offices and remote/home offices as extensions on one phone system. Savings over legacy phone service, high end features without high up front cost.