I need PSTN connection for an office of 10 users. What are the possible options for connecting to the PSTN. I need DID for each user. I can buy a block of 20 DIDs this is not a problem. The local provider does not provide a fractional T1. Buying a full T1 is too costly and overkill for an office of 10 user. What are the solutions in this scenario? Anyone any experience with DID over PSTN / FXO? I am thinking of using 20 DIDs over 4 POTS line if there is such offering from Telco. Is this possible? anyone tried it?
DID on BRI is supported all over the world, on the other hand if your SP says they will not, they have the last word. If you want to name someone that knows a thing or two about telephony in the USA, say AT&T.
It is also true that BRI never gained acceptance in the USA and many telco do not even know how (or do not want) to provision it.
Time to look for another SP perhaps. I think you want to avoid analog DID as much as possible, as it's archaic and limited anyway.
Last resort, get a single FXO for 911, and the rest via a reputable ITSP with all the DIDs you want.