Subj : Weekly nodelist report on noteworthy changes (238) To : Michiel van der Vlist From : Torsten Bamberg Date : Thu Sep 01 2022 23:01:07 Hallo Michiel! 31.08.2022 09:25, Michiel van der Vlist schrieb an Torsten Bamberg: MV> So they support G.711u. But The New Fritzbox from Kees van Eeten no MV> longer has the ISDN P0 bus. So one can not use local ISDN equipment. MV> Isn't that an indication that according to AVM ISDN has reached end of MV> life? AVM does strange things over the years now. This company is not a light in the air for innovations and new features. In case of a fritz!box without RJ11 jack, avm sells usually consumer products, and most of the homes use analog phones without the need of some isdn features. Because Kees does not use any new features on the telephony lines, (adopted at 1990 with DSS1) he might be satisfied with a fritz!box without isdn/voip bridge. ;-) If Kees had buyed a Fritz!Box 7590, he would be able to use enhanced data and voice features on isdn/rj11 jack. TB>> X75 is a valid flag with a phonenumber. MV> OK, so X75 it is a valid nodelist flag. But so is V22... V22? V.110 is a valid data transport standart of ITU-T. but bit data daption was usually not used on bri-isdn connections. MV>>> To me it seems even more inefficient as a means of transporting MV>>> data than analog modem over VOIP. TB>> I didn't find any ftsc proposals about the efficiency of TB>> connections. MV> Indeed, there is no such proposal. But why would anyone want to use an MV> inefficient means of transporting data when an efficient means is MV> available? Well, just because it works. MV> I am still puzzled about the added value of using ISDN over IP for MV> Fido. I can see two reasons for advertising ISDN as an alternative way MV> of connection in the nodelist: At all it doesn't make any sense. The geman VoIP/DSL/Cable hardware usually doesn't support any ISDN transport possibilities. But, because DTAG does support RFC4040 it is possible, to simulate a ISDN-Bri while using G711a or G712alaw on both sides. But, if the connection to the sip-gateway is missig, there is no fallback possible. MV> 1) As a fall back in case the "normal" connection fails. In the case MV> of ISDN over IP, this fails. If the IP connection is down, the ISDN MV> over IP is also down. It is not an independant means of connection, so MV> it is useless as a fall back. That's true. MV> 2) During the transition fase. When there are still nodes around that MV> only support "classic" ISDN and that have no IP connection. ISDN over MV> IP can be used to connect with these nodes. But that will end at the MV> end of the year when German Telecom shuts down "classic" ISDN. And MV> maybe if the dead wood is cleared from the nodelist, that situation MV> already exists now in R24. Ahm, usually nobody is using ISDN-Modems anymore, because 99 percent of the consumer hardware (modem/router) is not compatible to G.711a/724a I bet, 100 percent of analog/isdn noelist entrys are unconnectable. Anyway, if there are active analogue/isdn lines, theese are not in use for fidonet data. 100 percent of r24 nodes using binkd or native ip connections. But, in case you want test it, just call one of my phone-numbers with G.724a, simulate ISDN DATA, B3 transparent, connect with ppp/dhcp/gateway 1.1.1.1 and then start a binkd-session on 1.1.1.999 or datenbahn.domain.de.local port 666 By using this, you get a proper ppp connection via my bloody old isdn-ppp-zyxel router, connectet via asterisk/dahdi configured as bri/voip bridge with full X75/64kbits singlechannel. Btw; your isp must support rfc4040 My next steps are to start V34+ connections via analogue modem via dahdi-bridge. Prior to that, I have to upsize my 'telphony hardware', because the old dual-pentium 2GHz runs with 100% cpu load on one bridging channel. If I want to have more than one, allmost all connections get lost somewhere in space. Why this? Because it's possible to get worked. Currently I'm rebuilding a DSLAM with two BRI-Cards configured as sender for more than 16 isdn devices. I'm building my local digital switching hubs with bri-pci-cards and ntba's on freebsd with asterisk. All this stuff doesn't make sense, but it's a great fun, to get my old ISDN-Stuff getting worked. My knowledge is to low to rebuild isdn-data connections as software. Some guys at fido are able to to this, but they are too busy for this. Maybe in a few years we'll get some software based solutions. Hopefully our easteuropean fellows will be reinvolved at european (east/west) connection ideas outside of state control. 'We do cool' was the typing of a us/russian company in the early 1990's with a linux desktop. As I have seen on Cebit in Hannover on 1992. Invite, invent, work together. .... political spoiler... MV> Cheers, Michiel Bye/2 Torsten .... MAILBOX01: up 4d 10h 12m load: 39 proc, 188 threads (tbup1.1) --- GoldED+/OS2 1.1.5.22 * Origin: DatenBahn BBS Hamburg (2:240/5832) .