Does this MTNVPN also allow for SIP?
Cause i have a VOIP phone at home, recently switched to an MTN SIM and it can no longer connect to the provider. If I remove the MTN SIM and stick a Rain one in it, VOIP connects immediately. Same router, same switch, same settings - literally just changing SIM cards from one to the other, when the MTN SIM is in the VOIP cannot connect it times-out.
Cause i have a VOIP phone at home, recently switched to an MTN SIM and it can no longer connect to the provider. If I remove the MTN SIM and stick a Rain one in it, VOIP connects immediately. Same router, same switch, same settings - literally just changing SIM cards from one to the other, when the MTN SIM is in the VOIP cannot connect it times-out.

