"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by bellsystem, June 26, 2017, 05:18:03 PM
Quote from: Alex G. Bell on June 29, 2017, 11:39:43 AMThe point is that DID did not reduce the number of channels required between the PSTN and the PBX. Both the DID traffic and attendant traffic was usually carried over a DID trunk group of the same size as the previous incoming ringdown trunk group which appeared only at the attendant.
Quote from: bellsystem on June 29, 2017, 04:15:41 PMDominic,You seem to have some fundamental misunderstandings.Touch-Tone is an AT&T trademark. It's not a word novices use.I'm using SxS as shorthand for electromagnetical switches, aka Strowger switches.SxS switches are fully controlled based off of dial pulses. You can use your switchhook to control them, but you can't use a touch-tone phone to control 'em. TT would have to be converted to DP, and the * and # buttons can't be converted to DP (even though 1167 equates to *67, etc.)That's like saying you can use a dial phone with a manual Central Office. It's not doable! An operator still has to plug you in.Panasonic automatically converts DP to TT, although for one of my phones, it's for some reason converting TT to DP... and Panasonic PBX systems are really the only small, lightweight PBXs that have features. I have 2 now. But when I get more phones, I would upgrade to a full-size commercial PBX.I doubt PRI is disappearing, and I just checked and CenturyLink offers analog trunking (you'll get my business one day!). So does Verizon. And if the phone company doesn't do what I want, screw them: I'll build my own central office and they'll lose my business. Phone service has sucked since 1984.Even if the telcos. wanted to push SIP, they can't phase out other options. What about places with no or unreliable Internet connectivity? And do you do party-lines with SIP? Rotary phones?And as soon as people go VoIP, they lose access to dial-0 operator service and don't realize they can't make collect, person-to-person, or station-to-station calls by dialing 0, and then have to dial some 11-digit number just to reach an operator that will rip them off.So - what would work best for me, do you think? 1ESS? 5ESS? DMS100? DMS500?