Emulating the PSTN (continued)

Emulating the PSTN (continued)

• additional PBX features (which in Sweden means providing functions such as “I’m on vacation and will not return until 31 August 2020”)
• Computer-Telephony Integration (CTI), including Desktop call management, integration with various databases, etc.
• PSTN availability and reliability (thus the increasing use of Power over Ethernet (PoE) for Ethernet attached IP phones - so the wall outlet does not have to provide power for the phone to work)
• Roaming - both personal and device mobility
• Phone number portability
• E911 service {How do you handle geographic location of the station?}

Transcript

[slide58] But the good thing was, people figured out how to do this, how to provide number portability.