Huawei ar 2220 + polycom vx 300?

Question

SIP

Good day, comrades!
There is a huge enterprise with a large number of branches. I am responsible for one of the branches.
there is a Huawei AR 2220 access router and two Polycom vx 300 phones, it is possible to increase the number of phones.
Once this configuration worked, but the predecessor safely reset all router settings to 0 and quit...
each branch has its own prefix, let's say the branch in Moscow time has the prefix 11111 and the number 1001. I need to arrange the numbers in the same format.
all branches of the organization work through vpn Rostelecom and gather at the head office in Moscow time.
in telephony, I am a perfect 0. in network administration, I just started to understand in depth.
prompt please in what direction to dig. Maybe someone has experience in setting up these configurations, and there is an opportunity to somehow help.

Answer 1

I am perfect in telephony 0

This is enough to leave all the options and just hire a specialist for money who will set everything up according to your terms of reference.

but the predecessor safely reset all router settings to 0 and quit...

Don't hate sysadmins. It is very expensive (c) Bring this idea to the authorities. For the future. After all, it may happen that one day you gain experience, set everything up, but the authorities decide to send you into the cold for no apparent reason.

Maybe someone has experience in setting up these configurations, and there is an opportunity to somehow help.

Many people have experience. But no one will actually do this for you for nothing. Here you need to go to the place, to confiscate the whole thing. You can also dig up the theory of setting up glands in Google for free. So your task is not just Q&A here. A big one is planned here. And the price will not be small.

Answer 2

I can assume that there is a more senior admin from the main office itself, who is responsible for the design of the network. A good admin should have a backup. It can simply request a backup from the main office or a copy of the config from another branch.