Dual sim router

[sprocket10]

Our 819 4G routers have dual sim cards, but the units don't seem to always failover to the 2nd sim once the data allowance on the first is used.

I am after a script to failover to the alternative sim if a ping times out for 5 minutes.

So if the unit is currently running on sim0 it will fail to sim1 or vise versa, or if the unit is already on sim1 to fail to sim0

I cant work out the commands to run to find out the current sim and to start an if command

expected replies from command : show cellular 0  security

Active SIM = 0

or

Active SIM = 1

track 1 ip sla 10 reachability
 delay down 10 up 10
!
ip sla 10
 icmp-echo 8.8.8.8 source-interface Vlan1
 frequency 300
ip sla schedule 10 life forever start-time now
!
event manager applet SimFailover
 event track 1 state down
 action 0.1 ##### work out value of active sim
 action 0.2 ##### save value
 action 0.3 ##### if value equals 0
 action 0.4 cli command "cellular 0 lte sim activate slot 1"
 action 1.1 else
 action 1.2 cli command "cellular 0 lte sim activate slot 0"

[Joe Clarke · Accepted solution]

This should work:

action 0.1 cli command "enable"

action 0.2 cli command "show cellular0 security"

action 0.3 regexp "Active SIM = ([0-9])" $_cli_result match sim

action 0.4 if $sim eq 0

...

action 1.3 end
 

[Kuat Bakenov]

sim 1 and sim 2

different chat script ?!

how realise ?

[Joe Clarke]

I don't understand the question.  If you have different SIM numbers, just change the "if" statement to reflect the desired numbers.

[Kuat Bakenov]

hi!

sim 1, 2 - different:

apn,

username,

password...

[sprocket10]

Hi Kuat

Sorry I don't understand the question.

Both our sims are different providers (on this unit the sims are 0 and 1)

I have marked Joseph reply as correct

[Kuat Bakenov]

HI! ok....

eg.:

1) sim 1, slot 1, provider - "myGSMprovider1"

apn - "internet"

other parameter not need.

2) sim 2, slot 2, provider - "myGSMprovider2"

apn - "internet.provadername.countrycode"

username- "@internet.providername"

password- "providername.countrycode"

eg. if change active slot, provider1, not work with other setting (sett.for sim2)

how change active sim, and chat script?

how rollback?

[b.petronio]

Hello Kuat,

You should only have one chat script with no profile defined.

Example:

chat-script gsm "" "AT!SCACT=1" TIMEOUT 60 "OK"

instead this,

chat-script gsm "" "AT!SCACT=1,4" TIMEOUT 60 "OK"

chat-script gsm "" "AT!SCACT=1,5" TIMEOUT 60 "OK"

Then you should specify on controller cellular 0, what profile should be used for each sim:

controller Cellular 0
 gsm sim profile 4 slot 1
 gsm sim profile 5 slot 0

Now you sould be able to use both profiles depending on what SIM is active.

Hope that helps,

Bruno Petrónio