I have a setup for SIP and going to connect another service provide for that i need to do NAT for SIP server and gateways on router for this static natting will take place .
can someone pls guide me what else is required as i know SIP inspection is required on router .
can someone please share some example on this .
If the router is recent IOS, will support NAT-ALG without additional configuration.
If it not that, you may have problems due to NAT being done incorrectly. Sometime you can fix that on the SIP devices, sometime you cannot.