I new to the Hosted PBX and VoIP systems. Currently the company I work for has an old T1 phone system they are looking to move away from. We have Skype for Business and Office 365. Basically my question is, to use this system to make phone calls outside of our office will we need a ITSP? Microsoft claims to provide Unified Communications, which to me would sound like a hosted PBX. If anyone could fill me in on this I would greatly appreciate it.


Office 365 has Skype PBX/PSTN in preview, not in production today 2015-10-14. There are other hosted providers you could go with to get a dial tone in S4B, or you could build some voice infrastructure on-premises. ServerFault doesn't allow recommendations, and I couldn't make one without knowing what your business needs are.

  • Thank you for the response. Currently we have 71 users with 31 of them requiring a "hard phone." It's a non profit so getting them to use soft phone's is probably out of the question. We were hoping to get a bundled service (bandwidth, phones, hosted pbx) for cost effectiveness. – MainStain Oct 14 '15 at 21:18

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.