
• SIP_DOMAIN1
• SIP_DOMAIN2
• SIP_DOMAIN3
• SIP_DOMAIN4
• SIP_DOMAIN5
If E911_PROXY does not match the value
defined by these five variables, or the
variable E911_PROXY is not defined, the
value of SIP_DOMAIN1 is used as the
emergency proxy.
E911_PASSWORD The password for emergency username that
is used for making an emergency call that
does not require login. The proxy must be
configured with the same password,
otherwise the emergency call fails.
E911_TXLOC The variable that describes location
information that must be sent with the
REGISTER SIP message, or with the INVITE
SIP message.
Important:
You must add a set of numbers (regular expressions) marked as "emergency" to the
IP Deskphone dialing plan. Only these numbers are allowed for emergency calls that do not
require logon.
Feature impact on configuration tasks
1. Configuring the SIP Proxy
• The IP Deskphone must have an emergency user in order to make an
emergency call without a user logon.
• The IP Deskphone must have the necessary configurations values for
automatic REGISTER of the emergency user (if you choose this
implementation method).
• You must add the emergency user to the proxy.
2. Adding the emergency user to the IP Deskphone config file
• The IP Deskphone must have E911_USERNAME, E911_PROXY, and
E911_PASSWORD configured for making emergency calls.
Feature impact on configuration tasks
SIP Software for Avaya 1200 Series IP Deskphones-Administration January 2012 167
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