Aastra Telecom C53I Configuring Nortel NAT optional, Nortel Networks NAT, Select Network Settings

IP Phone Administrator Guide

Advanced Network Settings

Nortel Networks NAT

Phones				Nortel Networks provides a proprietary solution to support connectivity to their
				proxies from phones placed behind devices (such as routers or firewalls) that use
				NAT. Nortel uses the SIP ping request/reply between the Nortel proxy and the
				phone in order to keep the connection through the router or firewall active. A SIP
				Nortel NAT timer is the interval, in seconds (default is 60), that the phone sends
IP				SIP ping requests to the Nortel proxy.
	Configuring Nortel NAT (optional)
the
				You can configure Nortel NAT using the configuration files, the IP phone UI, or
				the Aastra Web UI.
Configuring
		Configuration Files
	For specific parameters you can set in the configuration files, see Appendix A, the section, “Network
	Address Translation (NAT) Settings” on page A-18.
			IP Phone UI
	Step		Action
	1		Press	on the phone to enter the Options List.
	2		Select Network Settings.
	3		Select NAT.
	4		Select Nortel.
	5		Select NAT Enabled.
	6		Press Change to set Yes (enable) or No (disable) for NAT on a Nortel network.
	7		Press Done to save the changes.

4-20 41-001160-00, Rev 01 Release 2.0