I have a small non-profit that I help that has a hub and spoke fiber network on managed Netgear switches. They have both T1 & DSL connectivity, separated by VLAN's with a simple VoIP system running. There are weird things happening and periodically the network slows down then jams up. Cycling the power on the main equipment restores functionality until the next time (usually a few days later). The network is actually fairly simple (serves around 15 users) and they don't have a dedicated IT guy, although one of the more technically minded general staff does most of the mundane IT stuff.
The organisation is rurally located and has had trouble finding local support with a sufficient depth of knowledge to diagnose the problem (suggesting that they systematically replace all the equipment until the problem goes away is not a diagnosis IMHO).
All the switches are managed and we could set up a packet sniffing machine to plug directly into a port setup for monitoring. Is it realistic to think that a network guru, logging in remotely would likely be able to do the detective work to locate the source of the issue?
Assuming it is viable, any direction on sites to look for gurus would also be appreciated. Also, if any network geeks reading this are up for some moonlighting at reasonable rates, please comment.