We have recently purchased a Zycoo ZX20 with some Grandstream GXV3140. I need help setting up the SIP registration of the handsets. Probably a very small job I already have the system plugged in - incoming calls (via PSTN) are dialing into the FXO? port and hitting the IVR but I cant seem to get the handsets to register with the server.
Happy to pay a minimum of 4 hrs per handset so 8 hrs in total or however long it takes.