hi john,

i've turned on the PAD and the router that it talks to, for the next
few hours. nothing's connected to it (yet?) but you are more than
welcome to dial it and get the "alerting" response.

--
?strid smith (she/her)
=<[ c y b e r ]>=
antique telephone collectors association member #4870



On 2022-06-23 at 2:58 pm PDT, john jones via groups.io wrote:

So I have my side mostly set up.



I believe Astrid's PAD is normally off-line but I'm not sure this is cause of
this debug output



2611_1#debug x25 ?

all Show all X.25 traffic (default)

annexg X.25 over Frame-Relay (Annex-G) Events

aodi Always On/Direct ISDN (PPP over X.25) events

cmns Show only CMNS traffic

events Show X.25 traffic without normal Data and RR packets

interface Show X.25 or CMNS traffic on one interface

only Show only X.25 traffic

vc X.25 traffic across a specific virtual circuit

xot Show only XOT (X.25-Over-TCP) traffic

<cr>



2611_1#debug x25 all

X.25 packet debugging is on

2611_1#

2611_1#

2611_1#pad 75241001

Trying 75241001...

% Destination unreachable; gateway or host down



2611_1#

*Mar 1 01:19:02.043: X.25 host name sent for DNS lookup is "410.752.x25.org"

*Mar 1 01:19:02.079: DNS got X.25 host mapping for "410.752.x25.org" via
network *Mar 1 01:19:02.079: XOT: access is not permitted for ip address
24.XXX.XXX.XX6 ? obscured by JJ



2611_1#









I'll leave my side up so maybe someone can try calling 68711101 . I'm not
completely done so don't spend much time !!



John

So I have my side mostly set up.



I believe Astrid's PAD is normally off-line but I'm not sure this is cause of
this debug output



2611_1#debug x25 ?

all Show all X.25 traffic (default)

annexg X.25 over Frame-Relay (Annex-G) Events

aodi Always On/Direct ISDN (PPP over X.25) events

cmns Show only CMNS traffic

events Show X.25 traffic without normal Data and RR packets

interface Show X.25 or CMNS traffic on one interface

only Show only X.25 traffic

vc X.25 traffic across a specific virtual circuit

xot Show only XOT (X.25-Over-TCP) traffic

<cr>



2611_1#debug x25 all

X.25 packet debugging is on

2611_1#

2611_1#

2611_1#pad 75241001

Trying 75241001...

% Destination unreachable; gateway or host down



2611_1#

*Mar 1 01:19:02.043: X.25 host name sent for DNS lookup is "410.752.x25.org"

*Mar 1 01:19:02.079: DNS got X.25 host mapping for "410.752.x25.org" via
network *Mar 1 01:19:02.079: XOT: access is not permitted for ip address
24.XXX.XXX.XX6 ? obscured by JJ



2611_1#









I'll leave my side up so maybe someone can try calling 68711101 . I'm not
completely done so don't spend much time !!



John

Hi,

On Thu, Jun 23, 2022 at 01:02:16PM -0500, Wes Fisher wrote:

That sounds really cool! :D

SGI Indy's interestingly have ISDN modems built in. I always
thought
that might be a fun thing to tinker with.

Plesae note that within the OCTOI (Osmocom Community ISDN) project
we're currently building a distributed over-the-internet ISDN
network:


Currently there's no direct method for BRI interfacing (only PRI),
but we're working on
a BRI hardware and making progress with prototypes:


It's on the general TODO list to try to support X.31 (X.25 over ISDN)
in OCTOI
at some point... Not sure when we will get to it, though.

sorry if this topic feels offtopic for the c*net list, everyone.? :)

true fact: i started looking into x.25 because i was curious about
temporary signalling connections and how they work on the Definity.?
i
wondered whether it would be possible to bolt on a data network next
to the existing c*net voice network to facilitate transparent isdn
interworking.? sort of like how the PSTN was slowly transitioned from
vf-only to a dual vf/packet network with ss6 and later ss7.

my thinking went: if things can be made to work that way, two
c*net-connected pbxes, each with local pri's homing on router that
splits/recombines all the datastreams properly, might could think
they're speaking end-to-end isdn, not even noticing anything unusual!
that would be neat.

so i started gathering equipment and learning how it all fits
together.? got a bit sidetracked though, haven't yet gotten around to
answering that first question one way or the other.

it does seem that you can statically configure a set of Definity
pbx's
into a larger network in a non-isdn environment, using regular vf
telephone trunks and sending the signalling traffic over X.25.
haven't gotten that to work properly yet either but i'm pretty close.

Don’t forget that ISDN, our belated attempt to bring data and multiple voice
to the public (under telco rules) in a new and faster? environment ncluded X.25
on the D Channel!??!

Historical perspective here ?

Keith Cheshire

On Jun 22, 2022, at 6:28 PM, john jones via groups.io <jjones3601=
[email protected]> wrote:

There isn't a hard line but telephony and VoIP are voice and X.25 is
definitely NOT that. Yes, the telephone companies carried the data circuits
and modems went over voice circuits but hopefully, you know what I mean. CNET
is many things to many people but for example, you won't see much conversation
about cell phones. I also wanted to calibrate to make sure there weren't a
bunch of folks that felt the CNET list was hijacked.

More importantly, to me at least, is some of these discussions might be good to
be "captured" on the x25.org list so that future folks interested in joining
the x25.org network can look back to the epoch of TELEBAHN and find these
conversations. Whether they are helpful or not.....

That being said, there seems to be a lot of people interested in the
conversation so we can keep it here.

John



-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Grant Taylor via
groups.io
Sent: Wednesday, June 22, 2022 5:20 PM
To: C-Netlist <[email protected]>
Subject: Re: [VoIP] ATTN Emily Post X.25 emails

On 6/22/22 2:34 PM, john jones via groups.io wrote:

I think we’ve moved beyond CNET over VoIP and can transition to the

X.25 email list if necessary.


I don't mind moving to a different mailing list if that's what the community
prefers.

However, I just re-read the C*NET (ckts.info) page again and I feel like
X.25 falls under the "pretty much anything telephony or VoIP related."
statement.

So I'm just curious if I'm misinterpreting or if the X.25 discussion is
something special.

Similarly, would discussions of ISDN telephony equipment be on or off topic?

I don't mind either way. I'm just trying to calibrate myself.



--
Grant. . . .
unix || die












--
Keith Cheshire

My first email on this, new to me group.?? I’m John, a retired network architect from Siemens Healthineers with a minor obsession in telephone switching system.

?

Back in the early 1980’s, I was a technical instructor for a third party computer maintenance company (Sorbus) when we got a contract with GTE to perform installation and trouble resolution services for their Telenet X.25 network.

?

Most of the work expected by our technician would include installing modems or 56K DSU’s at the GTE hub sites that contained the TP4000 X.25 backbone network switch, installing PAD’s at GTE customer locations, and being smart hands ( the term certainly didn’t exist back then !!! ) when repairs on the TP4000’s were required.?? Now Sorbus had zero experience in telecommunication or networking so the class I taught had to go from punching down wires on 66 blocks, to what a modem was and naturally, we wanted to provide an overview of what X.25 and what Telenet were.? I went to McLean VA for I think 6 weeks to sit through two of their 2-week courses with 2 weeks of mostly one-on-one time with GTE’s inhouse instructors.? I bought a book on X.25 before the visit to VA and was fascinated.? The network bug bit me and bit me hard and I enjoyed decades working in networking.

?

I don’t believe I ever used any X.25 network except for lab systems in those two classes in VA so I have zero practical or end-user experience but I’m confident I can get the networking part going pretty easily and figure out the rest while on the ride.

?

?

I do have a question.

?

Are there any devices that are always on on the x25.org network that I can make connections to?? If so, please provide numbers.

?

?

Thanks!

?

John

All,

Trying to get my Cisco 2600 working. I put in some X.25 routing rules as:

x25 routing
x25 route 752 xot 24.22.130.236 (my Cisco does not understand x25 route ...
dns)
x25 route 242 xot 216.239.32.21

If I then do:

x28
call 75241001

It sends packets but gets no response. I see in Packet capture:

14:51:24.542896 IP 104.58.86.73.11021 > 24.22.130.236.1998: Flags [S], seq
599537706, win 4128, options [mss 536], length 0
14:51:26.541877 IP 104.58.86.73.11021 > 24.22.130.236.1998: Flags [S], seq
599537706, win 4128, options [mss 536], length 0

DNS notes:

Lab-Router(config)#x25 route (...)(...).. xot ?
A.B.C.D Address of remote XOT host

However reversing the logic gives me:

Non-authoritative answer:
410.752.x25.org canonical name = 5fc5.ddns.net.
Name: 5fc5.ddns.net
Address: 24.22.130.236

So I assume I am right and its trying to connect, but per the notes this might
be down. I will try to get a gateway external accessible once I have figured
out how to make X.25 work in RSX11M.

The 7204VXR is finally set-up, and I've configured my CPE to forward TCP port 1998 to it. When scanned it from another host on the LAN, it seems to be listening on that port, after I configured X.25 as Astrid documented. Please contact me directly for my static IP.

-Meghan

nice! i see you reserved 242, which i just added to the DNS. want to attempt some connections sometime soon?
------------------------------------------------------------------------------------------------------------

?strid smith (she/her)

=<[ c y b e r ]>=

On Wed, Jun 9, 2021, at 23:10, meghan137 via groups.io wrote:

Hey, Astrid!

I'm sure more nerds will accrete over time.

This is the last week of classes for me, and I have a lot of stuff to

finish-up, so the earliest I can dig my Cisco router out and get it

configured is probably this Saturday, 6/12. Sorry for the delay. Thanks

for documenting your config, btw.

Meghan

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Wednesday, June 9th, 2021 at 10:09 PM, ?strid smith astrid@... wrote:

hah it's just you and me in here i guess

anyway i added my config snippet to the doco



let me know when you want to try linking up :D

i'm in pacific time and evenings are best for me. i generally have my equipment powered down because of noise but all the configs are saved so it comes up quickly enough.

?strid smith (she/her)

=<[ c y b e r ]>=

Hey, Astrid!

I'm sure more nerds will accrete over time.

This is the last week of classes for me, and I have a lot of stuff to
finish-up, so the earliest I can dig my Cisco router out and get it
configured is probably this Saturday, 6/12. Sorry for the delay. Thanks
for documenting your config, btw.

Meghan

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Wednesday, June 9th, 2021 at 10:09 PM, ?strid smith <astrid@...> wrote:

hah it's just you and me in here i guess

anyway i added my config snippet to the doco



let me know when you want to try linking up :D

i'm in pacific time and evenings are best for me. i generally have my equipment powered down because of noise but all the configs are saved so it comes up quickly enough.

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

?strid smith (she/her)

=<[ c y b e r ]>=

hah it's just you and me in here i guess

anyway i added my config snippet to the doco



let me know when you want to try linking up :D

i'm in pacific time and evenings are best for me. i generally have my equipment powered down because of noise but all the configs are saved so it comes up quickly enough.

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

?strid smith (she/her)

=<[ c y b e r ]>=