Receiving texts doesnt work

Question

I am using an iptel.org SIP together with an IPKall number and Zoiper.

I can receive most calls, only the one or other doesnt go through.

Most importantly, I cannot receive text messages at all. Whose fault is that, SIP, IPKall or Zoiper?

What do I do?

Comments

Hello,

Which zoiper product are you using and what error messages are seen when someone sends you a message?

Answer 1

The ITSP must offer legacy sms texting.  And it must convey it either by SIP SIMPLE or Xmpp Texting.