Avaya SIP Software 3.2 for 1200 Series Bedienungsanleitung Seite 116

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NAT Signal
The IP Deskphone with SIP Software supports two methods of NAT traversal of signaling path:
SIP_PING and STUN.
The default NAT traversal method is None.
SIP_PING is a legacy Avaya Proprietary protocol for NAT Traversal for SIP signaling only.
STUN is an Internet standard for NAT traversal.
If the value for NAT traversal is not configured as None, this parameter overrides the value of
the parameter SIP_PING specified by the device configuration file for NAT_SIGNALLING.
If the value for NAT traversal is set to None, the value of SIP_PING, if specified by the device
configuration file for NAT_SIGNALLING, is used instead.
NAT_SIGNALLING is required for networks that use STUN or SIP_PING for NAT traversal.
NAT Media
The IP Deskphone with SIP Software supports STUN for media path the NAT traversal. The
NAT Media feature can be disabled by setting the NAT_Media field in Device Settings menu
to NONE.
Note:
STUN protocol cannot coexist with Application Layer Gateway (ALG), Media Portals, or RTP
Proxy servers. If STUN is selected, ensure none of these devices are configured in the SIP
Proxy server.
NAT TTL
Enter the Time to Live (TTL) in seconds for the NATport if STUN is enabled. The IP Deskphone
with SIP Software pings the open ports on an interval less than the TTL to prevent the NAT
from tearing down the ports.
STUN S1 IP
Enter an IP address for the STUN S1 IP device. The STUN server must reside in the public
Internet for STUN protocol to be effective.
STUN S2 IP
Enter an IP address for the STUN S2 IP device. The STUN server must reside in the public
Internet for STUN protocol to be effective.
Configure the device settings
This section describes how to provision the Device Settings parameters, regardless of DHCP
mode (Yes or No DHCP). Parameters that are not needed in Yes DHCP mode are grayed out
on the IP Deskphone screen and cannot be modified.
Device Settings on the IP Deskphone with SIP Software
116 SIP Software for Avaya 1200 Series IP Deskphones-Administration January 2012
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