Question: FTTB VoIP service, dose OLT or ONT process the H248 signal？
Question: Upon completion of the VoIP service, if the called get the ringing,
but without voice, what is the problem？
Answer: VLAN user Bridge function should be enable.
Question: If ONT can not register into the softswitch, what will be the problem.
Answer: mgip, mgport, mgcip, mgcport