Thank you for even more suggestions, I hope you don't think I am poo-pooing them all, just considering
I tried to unravel the html of the mmi but it consists of large numbers of java-scripts that promptly change over to encrypted mode so no hope of spoofing that interface at all.

As the problem doesn't become critical till I finally cease my landline I guess I have some time to try (carefully) the openwrt route (deep breath), though I found little documentation on it (need to look harder)

EDIT: Bang goes that idea (openwrt) as this router (Tplink Archer MR600V3) is not supported.

Edited by fourtytwo (Thu 14-Sep-23 17:04:15)

In reply to a post by JonRennie:

If it were me, I would replace the old alarm panel - you could go with a Texecom Premier Elite and a SmartCom which would connect via ethernet or WiFi.

The panel is about £60; the SmartCom will cost a bit more, but this is a great solution (I run a variant of this solution myself).

Do they do a version of the SmartCom 4G with a regular mobile sim slot rather than a eSim as I haven't found anyone that does pay as you go via a eSim.

In reply to a post by fourtytwo:

In reply to a post by jpm:

How do you want this "triggered SMS" to be triggered? Teltonika routers have input and output pins and SMS functionality with an API https://wiki.teltonika-networks.com/view/RUTX50_Mobi...

Unfortunatly reading the manual it only seems to have an sms triggered outout pin, no mention of an input trigger (alarm) generating an sms unless I missed it.

https://wiki.teltonika-networks.com/view/RUTX50_Inpu...

In reply to a post by jpm:

In reply to a post by fourtytwo:

In reply to a post by jpm:

How do you want this "triggered SMS" to be triggered? Teltonika routers have input and output pins and SMS functionality with an API https://wiki.teltonika-networks.com/view/RUTX50_Mobi...

Unfortunatly reading the manual it only seems to have an sms triggered outout pin, no mention of an input trigger (alarm) generating an sms unless I missed it.

https://wiki.teltonika-networks.com/view/RUTX50_Inpu...

Ooops do apologize for my fumbling eyballs, got it, will investigate cost......
EDIT GULP circa £570 wayyyy outside my budget, sorry

Edited by fourtytwo (Thu 14-Sep-23 17:12:37)

In reply to a post by PCJM40:

In reply to a post by JonRennie:

If it were me, I would replace the old alarm panel - you could go with a Texecom Premier Elite and a SmartCom which would connect via ethernet or WiFi.

The panel is about £60; the SmartCom will cost a bit more, but this is a great solution (I run a variant of this solution myself).

Do they do a version of the SmartCom 4G with a regular mobile sim slot rather than a eSim as I haven't found anyone that does pay as you go via a eSim.

Then were back to two sims lols
EDIT : AND having had a brief look at the manual it doesnt mention SMS at all, just tie's you into the texecom cloud that expects you to have a smartphone.......

Edited by fourtytwo (Thu 14-Sep-23 17:20:23)

In reply to a post by fourtytwo:

Then were back to two sims lols
EDIT : AND having had a brief look at the manual it doesnt mention SMS at all, just tie's you into the texecom cloud that expects you to have a smartphone.......

I was asking for myself do you have a link to the manual?

So dare I summarize with advanced apologies for any requirements I did not originally state

1/ Separate 4G dialler that would require two sims...... That's the original problem two sims!
2/ There is a router with a send SMS from pin waggle.... Its fantastically expensive, circa £570
3/ There is an alarm system with IP alarms......... Its a bit expensive (~£200) and requires smartphones (no SMS)
4/ The existing routers firmware could be replaced..... Unfortunately OpenWrt doesn't support router
5/ Use Telnet interface of existing router............ No dialler commands in Telnet interface
6/ Spoof HTML interface......... Uses encrypted javascript, to difficult
7/ DIY router based on SBC + 4G modem....... Complex project, estimate ~£150+
8/ SMS API provider with small SBC to generate text......... Cheap but relies on unreliable? external server

Looks like 2 sims and simple 4G dialler (~£100)!! or take a punt on number 8 for £25 it seems.

Glossary :
SBC .... Single Board Computer
API ..... Application Programming Interface
HTML.... Gunk that makes web pages!

Edited by fourtytwo (Thu 14-Sep-23 18:50:51)

In reply to a post by PCJM40:

I was asking for myself do you have a link to the manual?

Yup they hide it from there main site but it's here smartcom manual

In reply to a post by fourtytwo:

So dare I summarize with advanced apologies for any requirements I did not originally state

1/ Separate 4G dialler that would require two sims...... That's the original problem two sims!
2/ There is a router with a send SMS from pin waggle.... Its fantastically expensive, circa £570
3/ There is an alarm system with IP alarms......... Its a bit expensive (~£200) and requires smartphones (no SMS)
4/ The existing routers firmware could be replaced..... Unfortunately OpenWrt doesn't support router
5/ Use Telnet interface of existing router............ No dialler commands in Telnet interface
6/ Spoof HTML interface......... Uses encrypted javascript, to difficult
7/ DIY router based on SBC + 4G modem....... Complex project, estimate ~£150+
8/ SMS API provider with small SBC to generate text......... Cheap but relies on unreliable? external server

Looks like 2 sims and simple 4G dialler (~£100)!!

Glossary :
SBC .... Single Board Computer
API ..... Application Programming Interface
HTML.... Gunk that makes web pages!

re/ point 2...

Various Teltonika's support SMS and GPIO based triggering functionality. There is a new RUT 260 (cat 6) box recently launched, which should be around £150

https://teltonika-networks.com/products/routers/rut260

In reply to a post by fourtytwo:

EDIT: Bang goes that idea (openwrt) as this router (Tplink Archer MR600V3) is not supported.

OK, TP-Link is pretty useless when it comes to Command Line Interface.
I would get my hands on a ZTE MF286D (off eBay for around £50), stick OpenWRT on it, get the SMS to work and the flog the Archer MR600. They fetch between £30 and £90 on eBay, so you could be quids in (or at least not out of pocket) and end up with a better 4G router (the MR600 is Cat 6, MF286D is Cat 12)