All,

My FTTH provider gives VOICE(static IP: 10.5.0.49) in VLAN 10 and internet in VLAN 20(static IP and dynamic IP through PPPoE). I've connected fiber through ODI SFP in RB5009Upr.

Setup is like this, separate VOIP bridge which has VLAN10 interface and Ether5. In ether5 i've connected VOIP phone and configured VOIP static IP(ISP provided) in the phone itself. VOIP IP configured in Phone is, 10.5.0.49 and gateway is 10.5.0.1. There is also separate SIP server details and accounts which is again directly configured in VOIP phone.

VOIP phone is working fine except that phone dont have access to internet or access to router IP which is 192.168.88.1. Either internet access or atleast access to router is needed in VOIP phone, so that it can sync NTP server, either internet NTP server or router's NTP server.

I understand because of VOIP gateway configured in SIP phone(10.5.0.1) all the traffic will be sent to VOIP provider, but is anyway i can setup some firewall rule to send SIP phone's traffic intended for 10.5.0.0/24 and SIP server IP to the VOIP bridge and rest all traffic to main bridge?

My SIP phone has some strange issue.. like it will go sleep if it is not used for around 30 hours and it wont ring during calls. So i had to restart phone everyday using script which turns off/on through POE. After this restart, SIP phone will lose time. So i need a way to sync timing through NTP.

Good Evening,

Yeah, at the moment your VOIP-Phone is directly connected to the FTTH-Network (Layer2).

I don`t think that is the Normal-Way to go...
In Theory, you should habe both your VOIP-Phone and Computer in your own Home-Network(s).
With both VLAN10 and VLAN20 configured on the Router for Routing. (VLAN20 with Default-Gateway 0.0.0.0/0)

This will result in you VOIP-Phones having access to the Internet via VLAN20 and connect to the VOIP-Server via VLAN10.

Yes, Thanks! it was sorted out like the way you explained it.