try out a different smsc simulator

[komuw]

see: twitter-archive/cloudhopper-smpp#87
which leads to; https://github.com/MavoCz/smscsim

[komuw]

This one would do; https://melroselabs.com/services/smsc-simulator/

[komuw]

also; https://smscarrier.com/smsc-simulator/

[theLastOfCats]

try this one https://github.com/savonarola/smppex_web