I will remotely troubleshoot any networking or voip issues

I will troubleshoot any issues on router, switches, firewalls, pbxs, phones, etc. Will remotely troubleshoot issues on any of the above. Will need access to the equipment and will check isolate where the issue is. I will resolve the issue if possible remotely or give step by step instructions on how to resolve the issue if it has to be done physically and not remotely.