Hi everyone sorry this is probably the dumbest question. Here's my set up, in our office we have:
Cable Internet connected to one router, 10.0.0.1 as the gateway address, which all users use over WiFi, Ethernet etc for our main internet connection. We currently have our IP PBX connected with IP 10.0.0.50 and then all IP phones connect as well and have IPs in that range. We can then easily access the PBX web portal with no issue.
What we want to add is DSL Internet on a second router that our IP PBX will instead connect to, so that it's on a dedicated Internet connection from the one we use for web browsing etc. I realize that by doing that, I'm basically creating 2 separate networks and that even if I made it 10.0.0.2 so that the phones etc all have similar IP addresses, they wouldn't be connected, meaning a user on the cable router couldn't access the PBX web portal anymore unless they do so through the Internet. It's also a pain as the IP phones would use the Ethernet cable from the DSL router, but then we couldn't connect a PC into the phone to piggy back off it as then it would be on that same network (less of an issue).
I feel like this is Networking 101, so just wondering if I connected both routers to one switch (assuming that's what i'd have to do), what gateway, IP range etc do I set on both routers, so that only the IP phones use the DSL Internet connection, but that a user on the cable connection could still access the PBX web portal on the local network? Thank you!