Re: TELEBAHN Saturday

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Hans,

Sounds good.

I added access to a couple of systems the other day, through my PAD. ?Those are on 24/7. ? For these they are going into a Cisco PAD, and then LAT/Telnet from there, so it’s not really end to end X.25. ?On the RSX-11M instance, I am building up a new machine that will run Dec’s PSI, although will then have to figure out how to get that connected through the Cisco.

I did try through your VAX and SunOS nodes, so confirmed they should be good.?

Show quoted text

On Jun 20, 2023, at 11:12 AM, Hans Hübner <hans.huebner@...> wrote:

Hi Folks,

Andrew (ajk) and myself have been thinking that it would be nice to have a recurring time where we bring our systems up and play around with some of the other X.25 nodes.? Maybe some of you are interested in joining us?? I would propose that we declare the last Saturday of a month to be "" - My machines will be running all day, and Andrew said he'll run his around midday US Central?time.

I've set up my VAX so that you can create yourself an account and then use the SEND command to chat - Connect to 23000200 using xotpad or your node's native PAD and set yourself up for Saturday.

Hope to meet some of you and some of your machines on Saturday!
Hans

TELEBAHN Saturday

#98

Hi Folks,

Andrew (ajk) and myself have been thinking that it would be nice to have a recurring time where we bring our systems up and play around with some of the other X.25 nodes.? Maybe some of you are interested in joining us?? I would propose that we declare the last Saturday of a month to be "" - My machines will be running all day, and Andrew said he'll run his around midday US Central?time.

I've set up my VAX so that you can create yourself an account and then use the SEND command to chat - Connect to 23000200 using xotpad or your node's native PAD and set yourself up for Saturday.

Hope to meet some of you and some of your machines on Saturday!
Hans

Re: trabant (23000300) out of order

#97

Am Mo., 12. Juni 2023 um 18:07?Uhr schrieb Hans Hübner <hans.huebner@...>:

Checking the PSU, I found that the +12V rail is dead,?+5V and -12V are fine and judging from the SCSI2SD activity, it seems that the machine boots as well.? I guess I'll bodge a boost converter into the +5V rail to generate the?+12V needed to drive the AUI transceiver and the serial ports.? These SPARCstation IPC/IPX power supplies are really sad :(

Time will tell whether the repair was permanent, but for now, the IPX is running again.? I cut the?+12V outputs from the PSU and instead inserted a simple MT3608 based boost converter board as planned.? Simple enough, and it just works for now.?

Re: trabant (23000300) out of order

#96

Checking the PSU, I found that the +12V rail is dead,?+5V and -12V are fine and judging from the SCSI2SD activity, it seems that the machine boots as well.? I guess I'll bodge a boost converter into the +5V rail to generate the?+12V needed to drive the AUI transceiver and the serial ports.? These SPARCstation IPC/IPX power supplies are really sad :(

Am Mo., 12. Juni 2023 um 17:41?Uhr schrieb Hans Hübner <hans.huebner@...>:

Show quoted text

Hi folks,

my SPARCstation IPX decided to give up the ghost today.? I'll see if I can fix it, but for now, I only have the VAX (23000200) and the cisco (23000100) online.

Cheers,
Hans

trabant (23000300) out of order

#95

Hi folks,

my SPARCstation IPX decided to give up the ghost today.? I'll see if I can fix it, but for now, I only have the VAX (23000200) and the cisco (23000100) online.

Cheers,

Hans

Re: Any TELEBAHN nodes online at the moment?

#94

Looks like the Cisco at 23000100 does not accept direct calls via XOT (it forwards calls to other 230x hosts but you can't call 23000100 itself). I'm guessing because it doesn't know its own X121 address – there's neither an "x25 profile" for XOT, nor a static "x25 host" for the router itself, nor any X25 records in DNS.

> x25 host address 23000100

this should say "x25 host 23000100" (i.e. with the router's own <hostname>), it's like the localhost entry in /etc/hosts. (Alternatively give it an X25 record in DNS alongside the IPv4 A record.)

It's also how you make your "source" NUA visible to the calling system when making PAD calls from IOS – either define it on the outbound interface (which is the "x25 profile" when the outbound is XOT) or as a host entry for the cisco's own hostname.

I *think* I figured out calls into Sun/VAX from my side, it seems the Sun system doesn't negotiate windowsize and only looks at the defaults (which the TELEBAHN profile defines as 'win 15' / 'wout 15'), and refuses anything larger than 7.

Though I still haven't figured out how to manually tell VMS what terminal type I'm using (since X29 does not send $TERM over to the remote host), so it thinks I'm on a dumb tty. That doesn't play well with `phone` at all (and even more so at 9600 bps, I suppose), it kept scrolling to "refresh the screen" at a rate of ... 3 seconds per character, or so. I guess it's in `set terminal` somewhere.

(I thought I'd screen-record it, but gnome-shell crashed while it was still scrolling halfway through your sentence so I missed the rest of it. Sorry)

Show quoted text

On Mon, Jun 5, 2023 at 5:05?PM Hans Hübner <hans.huebner@...> wrote:

Am Mo., 5. Juni 2023 um 15:53?Uhr schrieb Mantas Mikul?nas <grawity@...>:
As far as I understand, if you call an address that doesn't match any explicit 'x25 route', IOS will by default route it through either Se0/0 or "the first X.25-capable interface" (I am not sure which).

That is, Serial0/0 is your implicit "default route" on IOS.

I *think* you can add an explicit reject at the end of your routing table using:

? ? x25 route .* clear

I haven't tested this yet.

It works, thanks!

-Hans

!
version 12.1
no service single-slot-reload-enable
service pad to-xot
service pad from-xot
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname
!
logging rate-limit console 10 except errors
enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1
!
ip subnet-zero
no ip routing
!
!
no ip finger
ip domain-name
ip name-server 192.168.23.1
!
x25 routing
!
!
!
interface Ethernet0/0
?ip address 192.168.23.2 255.255.255.0
?no ip route-cache
?no ip mroute-cache
?half-duplex
?no cdp enable
!
interface Serial0/0
?description Sun SPARCstation IPX
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
interface BRI0/0
?no ip address
?no ip route-cache
?no ip mroute-cache
?shutdown
?no cdp enable
!
interface Serial0/1
?description VAX 4000-105A EUGENE::
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
ip default-gateway 192.168.23.1
ip classless
no ip http server
!
logging facility local4
logging source-interface Ethernet0/0
logging 192.168.178.11
no cdp run
x25 route ^230003.. interface Serial0/0
x25 route ^230002.. interface Serial0/1
x25 route ^(...)(...) xot dns \2.\
x25 route .* clear
x25 host address 23000100
!
line con 0
?transport input none
line aux 0
line vty 0 4
?password cisco
?login
!
no scheduler allocate
end

--

Mantas Mikul?nas

Re: Any TELEBAHN nodes online at the moment?

#93

Am Mo., 5. Juni 2023 um 15:53?Uhr schrieb Mantas Mikul?nas <grawity@...>:

As far as I understand, if you call an address that doesn't match any explicit 'x25 route', IOS will by default route it through either Se0/0 or "the first X.25-capable interface" (I am not sure which).

That is, Serial0/0 is your implicit "default route" on IOS.

I *think* you can add an explicit reject at the end of your routing table using:

? ? x25 route .* clear

I haven't tested this yet.

It works, thanks!

-Hans

!
version 12.1
no service single-slot-reload-enable
service pad to-xot
service pad from-xot
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname
!
logging rate-limit console 10 except errors
enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1
!
ip subnet-zero
no ip routing
!
!
no ip finger
ip domain-name
ip name-server 192.168.23.1
!
x25 routing
!
!
!
interface Ethernet0/0
?ip address 192.168.23.2 255.255.255.0
?no ip route-cache
?no ip mroute-cache
?half-duplex
?no cdp enable
!
interface Serial0/0
?description Sun SPARCstation IPX
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
interface BRI0/0
?no ip address
?no ip route-cache
?no ip mroute-cache
?shutdown
?no cdp enable
!
interface Serial0/1
?description VAX 4000-105A EUGENE::
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
ip default-gateway 192.168.23.1
ip classless
no ip http server
!
logging facility local4
logging source-interface Ethernet0/0
logging 192.168.178.11
no cdp run
x25 route ^230003.. interface Serial0/0
x25 route ^230002.. interface Serial0/1
x25 route ^(...)(...) xot dns \2.\
x25 route .* clear
x25 host address 23000100
!
line con 0
?transport input none
line aux 0
line vty 0 4
?password cisco
?login
!
no scheduler allocate

end

Re: Any TELEBAHN nodes online at the moment?

#92

As far as I understand, if you call an address that doesn't match any explicit 'x25 route', IOS will by default route it through either Se0/0 or "the first X.25-capable interface" (I am not sure which).

That is, Serial0/0 is your implicit "default route" on IOS.

I *think* you can add an explicit reject at the end of your routing table using:

? ? x25 route .* clear

I haven't tested this yet.

Show quoted text

On Mon, Jun 5, 2023, 16:08 Hans Hübner <hans.huebner@...> wrote:

Hi Mantas,

thank you for trying this out.? The issue was an incorrect name server entry on the cisco.? I've fixed that, and now I can establish outbound connections as well.? Nice!? :)

One issue still puzzles me:? When I use the pad on the cisco with any non-local address, I get connected to my Sun.? This is kind of minor, still would be nice to see fixed.? Any ideas?

!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname
!
logging rate-limit console 10 except errors
enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1
!
ip subnet-zero
no ip routing
!
!
no ip finger
ip domain-name
ip name-server 192.168.23.1
!
x25 routing
!
!
!
interface Ethernet0/0
?ip address 192.168.23.2 255.255.255.0
?no ip route-cache
?no ip mroute-cache
?half-duplex
?no cdp enable
!
interface Serial0/0
?description Sun SPARCstation IPX
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
interface BRI0/0
?no ip address
?no ip route-cache
?no ip mroute-cache
?shutdown
?no cdp enable
!
interface Serial0/1
?description VAX 4000-105A EUGENE::
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
ip default-gateway 192.168.23.1
ip classless
no ip http server
!
logging facility local4
logging source-interface Ethernet0/0
logging 192.168.178.11
no cdp run
x25 route ^230003.. interface Serial0/0
x25 route ^230002.. interface Serial0/1
x25 route ^(...)(...) xot dns \2.\
!
line con 0
?transport input none
line aux 0
line vty 0 4
?password cisco
?login
!
no scheduler allocate
end

Am Mo., 5. Juni 2023 um 14:05?Uhr schrieb Mantas Mikul?nas <grawity@...>:
I'm not seeing any inbound packets on my port 1998 (XoT) when I run `pad 471041` from the Sun or (if I got this right) `set host/x29 471041` on VMS. They both just time out with:

$ set host/x29 471041
%PAD-E-CLR_DTE, call cleared by remote DTE
-PAD-I-CAUSEDIAG, cause code 00, diagnostic code 00

> pad 471041
SunLink X.25 PAD V6.0. Type ^P<cr> for Executive, ^Pb for break
Calling... connection refused: 00 00: Connection refused

From 471.041 itself, I get:

Cisco1760-top#pad 23000200
Trying 23000200...
% Connection refused by remote host
Jun ?5 11:59:17.806: X.25 host name sent for DNS lookup is ""
Jun ?5 11:59:17.862: DNS got X.25 host mapping for "" via network
Jun ?5 11:59:17.934: [62.156.10.103,1998/,11540]: XOT O P2 Call (22) 128 lci 1
Jun ?5 11:59:17.934: ? From (6): 471041 To (8): 23000200
Jun ?5 11:59:17.934: ? Facilities: (6)
Jun ?5 11:59:17.934: ? ? Packet sizes: 1024 1024
Jun ?5 11:59:17.938: ? ? Window sizes: 15 15
Jun ?5 11:59:17.938: ? Call User Data (4): 0x01000000 (pad)
Jun ?5 11:59:18.002: [62.156.10.103,1998/,11540]: XOT I P2 Clear (5) 128 lci 1
Jun ?5 11:59:18.002: ? Cause 3, Diag 66 (Invalid facility request/Facility parameter not allowed)
Jun ?5 11:59:18.006: [62.156.10.103,1998/,11540]: XOT O P7 Clear Confirm (3) 128 lci 1

I have the TELEBAHN profile + the "x25 subscribe {window,packet}size..." from earlier. (Yes I finally settled on an address prefix for long enough that it got put in DNS...)

On Mon, Jun 5, 2023 at 2:08?PM Hans Hübner <hans.huebner@...> wrote:
Hi,

I finally have my VAX and my Sun all wired and hooked up to Telebahn - They should be reachable at 230.002.00 and 230.003.00 respectively.? I could connect from the outside using xotpad, but I have not yet been able to reach anything else through xot.? Are any of your machines up at this point?

Thanks,
Hans

--
Mantas Mikul?nas

Re: Any TELEBAHN nodes online at the moment?

#91

Hi Mantas,

thank you for trying this out.? The issue was an incorrect name server entry on the cisco.? I've fixed that, and now I can establish outbound connections as well.? Nice!? :)

One issue still puzzles me:? When I use the pad on the cisco with any non-local address, I get connected to my Sun.? This is kind of minor, still would be nice to see fixed.? Any ideas?

!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname
!
logging rate-limit console 10 except errors
enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1
!
ip subnet-zero
no ip routing
!
!
no ip finger
ip domain-name
ip name-server 192.168.23.1
!
x25 routing
!
!
!
interface Ethernet0/0
?ip address 192.168.23.2 255.255.255.0
?no ip route-cache
?no ip mroute-cache
?half-duplex
?no cdp enable
!
interface Serial0/0
?description Sun SPARCstation IPX
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
interface BRI0/0
?no ip address
?no ip route-cache
?no ip mroute-cache
?shutdown
?no cdp enable
!
interface Serial0/1
?description VAX 4000-105A EUGENE::
?no ip address
?encapsulation x25 dce
?no ip route-cache
?no ip mroute-cache
?x25 address 23000100
?clockrate 9600
?no cdp enable
!
ip default-gateway 192.168.23.1
ip classless
no ip http server
!
logging facility local4
logging source-interface Ethernet0/0
logging 192.168.178.11
no cdp run
x25 route ^230003.. interface Serial0/0
x25 route ^230002.. interface Serial0/1
x25 route ^(...)(...) xot dns \2.\
!
line con 0
?transport input none
line aux 0
line vty 0 4
?password cisco
?login
!
no scheduler allocate
end

Am Mo., 5. Juni 2023 um 14:05?Uhr schrieb Mantas Mikul?nas <grawity@...>:

Show quoted text

I'm not seeing any inbound packets on my port 1998 (XoT) when I run `pad 471041` from the Sun or (if I got this right) `set host/x29 471041` on VMS. They both just time out with:

$ set host/x29 471041
%PAD-E-CLR_DTE, call cleared by remote DTE
-PAD-I-CAUSEDIAG, cause code 00, diagnostic code 00

> pad 471041
SunLink X.25 PAD V6.0. Type ^P<cr> for Executive, ^Pb for break
Calling... connection refused: 00 00: Connection refused

From 471.041 itself, I get:

Cisco1760-top#pad 23000200
Trying 23000200...
% Connection refused by remote host
Jun ?5 11:59:17.806: X.25 host name sent for DNS lookup is ""
Jun ?5 11:59:17.862: DNS got X.25 host mapping for "" via network
Jun ?5 11:59:17.934: [62.156.10.103,1998/,11540]: XOT O P2 Call (22) 128 lci 1
Jun ?5 11:59:17.934: ? From (6): 471041 To (8): 23000200
Jun ?5 11:59:17.934: ? Facilities: (6)
Jun ?5 11:59:17.934: ? ? Packet sizes: 1024 1024
Jun ?5 11:59:17.938: ? ? Window sizes: 15 15
Jun ?5 11:59:17.938: ? Call User Data (4): 0x01000000 (pad)
Jun ?5 11:59:18.002: [62.156.10.103,1998/,11540]: XOT I P2 Clear (5) 128 lci 1
Jun ?5 11:59:18.002: ? Cause 3, Diag 66 (Invalid facility request/Facility parameter not allowed)
Jun ?5 11:59:18.006: [62.156.10.103,1998/,11540]: XOT O P7 Clear Confirm (3) 128 lci 1

I have the TELEBAHN profile + the "x25 subscribe {window,packet}size..." from earlier. (Yes I finally settled on an address prefix for long enough that it got put in DNS...)

On Mon, Jun 5, 2023 at 2:08?PM Hans Hübner <hans.huebner@...> wrote:
Hi,

I finally have my VAX and my Sun all wired and hooked up to Telebahn - They should be reachable at 230.002.00 and 230.003.00 respectively.? I could connect from the outside using xotpad, but I have not yet been able to reach anything else through xot.? Are any of your machines up at this point?

Thanks,
Hans

--
Mantas Mikul?nas

Re: Any TELEBAHN nodes online at the moment?

#90

I'm not seeing any inbound packets on my port 1998 (XoT) when I run `pad 471041` from the Sun or (if I got this right) `set host/x29 471041` on VMS. They both just time out with:

$ set host/x29 471041
%PAD-E-CLR_DTE, call cleared by remote DTE
-PAD-I-CAUSEDIAG, cause code 00, diagnostic code 00

> pad 471041
SunLink X.25 PAD V6.0. Type ^P<cr> for Executive, ^Pb for break
Calling... connection refused: 00 00: Connection refused

From 471.041 itself, I get:

Cisco1760-top#pad 23000200
Trying 23000200...
% Connection refused by remote host
Jun ?5 11:59:17.806: X.25 host name sent for DNS lookup is ""
Jun ?5 11:59:17.862: DNS got X.25 host mapping for "" via network
Jun ?5 11:59:17.934: [62.156.10.103,1998/,11540]: XOT O P2 Call (22) 128 lci 1
Jun ?5 11:59:17.934: ? From (6): 471041 To (8): 23000200
Jun ?5 11:59:17.934: ? Facilities: (6)
Jun ?5 11:59:17.934: ? ? Packet sizes: 1024 1024
Jun ?5 11:59:17.938: ? ? Window sizes: 15 15
Jun ?5 11:59:17.938: ? Call User Data (4): 0x01000000 (pad)
Jun ?5 11:59:18.002: [62.156.10.103,1998/,11540]: XOT I P2 Clear (5) 128 lci 1
Jun ?5 11:59:18.002: ? Cause 3, Diag 66 (Invalid facility request/Facility parameter not allowed)
Jun ?5 11:59:18.006: [62.156.10.103,1998/,11540]: XOT O P7 Clear Confirm (3) 128 lci 1

I have the TELEBAHN profile + the "x25 subscribe {window,packet}size..." from earlier. (Yes I finally settled on an address prefix for long enough that it got put in DNS...)

Show quoted text

On Mon, Jun 5, 2023 at 2:08?PM Hans Hübner <hans.huebner@...> wrote:

Hi,

I finally have my VAX and my Sun all wired and hooked up to Telebahn - They should be reachable at 230.002.00 and 230.003.00 respectively.? I could connect from the outside using xotpad, but I have not yet been able to reach anything else through xot.? Are any of your machines up at this point?

Thanks,
Hans

--

Mantas Mikul?nas

Any TELEBAHN nodes online at the moment?

#89

Hi,

I finally have my VAX and my Sun all wired and hooked up to Telebahn - They should be reachable at 230.002.00 and 230.003.00 respectively.? I could connect from the outside using xotpad, but I have not yet been able to reach anything else through xot.? Are any of your machines up at this point?

Thanks,

Hans

Re: Getting started

#88

Interesting!

I'm not sure I want others to access my router's console, but converting X.25 -> telnet is something I'm interested in, I'll ping you again once I have the gear with me :)

Re: Getting started

#87

You sorta can, using the cisco as a PAD.

You can connect async devices to the AUX port, such as the console
port on a computer, allowing others to connect via x.25 and get the
console. You can also configure IOS to convert incoming x.25
connections to telnet.

Show quoted text

On Thu, May 25, 2023 at 2:43?PM Alice Wyan <finitud@...> wrote:

Yes, what I mean is, without the additional hardware I can't really connect anything via XOT.

Re: Getting started

#86

Yes, what I mean is, without the additional hardware I can't really connect anything via XOT.

Re: Getting started

#85

XOT works without any cards, this is for connecting multiple local devices only.

Show quoted text

On Wed, May 24, 2023, 21:48 Alice Wyan <finitud@...> wrote:

I see, this might be a problem for the time being... also it seems that the WIC-2T is no longer supported on the 1900 series, and the HWIC-2T are quite a lot more expensive, so I might need to postpone XOT on the router. I vaguely remember there being X25 support in the Linux kernel a while ago, is doing XOT on a Linux box an option? Or perhaps on some other older OS?

Re: Getting started

john jones

#84

开云体育

You could use something like a Cisco 2501 which has the correct serial ports (2).? You would need to also get an AUI adapter as the 2501 predates 10Base-T.? Truly retro.? Maybe.

?

John

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Alice Wyan
Sent: Wednesday, May 24, 2023 2:49 PM
To: [email protected]
Subject: Re: [X.25] Getting started

?

I see, this might be a problem for the time being... also it seems that the WIC-2T is no longer supported on the 1900 series, and the HWIC-2T are quite a lot more expensive, so I might need to postpone XOT on the router. I vaguely remember there being X25 support in the Linux kernel a while ago, is doing XOT on a Linux box an option? Or perhaps on some other older OS?

Re: Getting started

#83

I see, this might be a problem for the time being... also it seems that the WIC-2T is no longer supported on the 1900 series, and the HWIC-2T are quite a lot more expensive, so I might need to postpone XOT on the router. I vaguely remember there being X25 support in the Linux kernel a while ago, is doing XOT on a Linux box an option? Or perhaps on some other older OS?

Re: Getting started

#82

On Wed, May 24, 2023 at 3:06?PM Alice Wyan <finitud@...> wrote:

Hi,

I just came across the TELEBAHN network and don't have much idea of how to start exploring, I've never used X.25 before :)

Can any Cisco router do XOT / X.25 routing? Does it require additional hardware?

It might, if you want to have a "subnet" with more than one device. If I understand things correctly, Cisco IOS will not route from XOT to XOT – if you make a call locally (or if it arrives via serial link) then you can talk to any other host via XOT, but if a call *comes in* via XOT it can only be routed to a physical interface (e.g. Serial0/1 on a WIC-2A/S or WIC-2T<2>). Fortunately my Cisco1760s all had serial cards but I had to find some cables to connect them<1>. (No, async ports like Aux0 won't work.) As far as software goes, though, the lowest-end "y" (Basic IP) IOS image (the only thing that fits in them) was enough for X.25 and XOT.

<1> (Chonky CAB-SS-V35MT<-> CAB-SS-V35FC at first, but later I found out that eBay has unofficial "back-to-back smart-serial" serial cables nowadays.)

<2> (WIC-1T seems to lack the "clock generation" pieces – as the manual mentions it lacking a CSU/DSU – so I assume it wouldn't work for a back-to-back connection; you need one side capable of providing clocking.)

Re: Getting started

#81

Am Mi., 24. Mai 2023 um 18:31?Uhr schrieb Alice Wyan <finitud@...>:

I've been looking at the WIC-1T and WIC-2T cards these last few days while totally confused. With the right cable, should I be able to connect to any device that supports serial connection then? That'd be pretty interesting, as I could then connect some interesting devices. I've also seen a cable that fits the strange WIC-2T serial port and has multiple RJ-45 connections on the other end, would that sort of cable work in this set up to connect multiple serial devices per port? (I'm assuming the original purpose is to connect many device console ports to one)

The WIC-1T and WIC-2T are synchronous serial cards with one and two ports, respectively.? Synchronous means that there are separate clock signals on the interface, which allows higher speeds than the usual asynchronous serial connections (even though asynchronous serial can be pretty fast nowadays).? On the cisco side, there are proprietary connectors with 60 (legacy) or 26 (smart serial) pins, but the large number of pins is owed to the fact that these ports have a number of ID pins which signal the type of cable to the cisco router, and many signals that are only used with certain physical connection types (i.e. differential signaling of X.21 and V.35).? Multiport asynchronous modules exist (e.g. HWIC-8A and HWIC-16A), but they use different connector types and cables.

X.25 does not work over asynchronous serial lines, and most standard serial ports do not support synchronous operation as they lack the required controller chips and clock signals.? SPARCstations are an exception, which is why I found myself a SPARCstation IPX.

Re: Getting started

#80

Hi Hans,

That's pretty cool that you could access X25 networks in your youth! I never managed to figure out anything of interest in the phone network back then -- we were charged by connection plus duration, so anything beyond local BBSs was totally out of the question, but none of the amazing tales about red boxing and blue boxing worked here, sadly.

I've been looking at the WIC-1T and WIC-2T cards these last few days while totally confused. With the right cable, should I be able to connect to any device that supports serial connection then? That'd be pretty interesting, as I could then connect some interesting devices. I've also seen a cable that fits the strange WIC-2T serial port and has multiple RJ-45 connections on the other end, would that sort of cable work in this set up to connect multiple serial devices per port? (I'm assuming the original purpose is to connect many device console ports to one)

Regards

Alice