Cisco Router-Tell which ports are currently open/VOIP??
Is their any way to tell on a Cisco router which ports are currently open? I'm trying to figure out which ports our Siemens VOIP phones are using. Outgoing traffic is being prioritized (LLQ) on the router but all traffic (incoming) originating from the offsite phone system is not so I’d like to be able to tell which ports it’s opening on the offsite phone system router.