Nortel Networks 1000 802.1Q

IP Line 4.5 administration Page 537 of 910

IP Line Description, Installation and Maintenance

Configuration

The Emergency Services Access (ESA) feature must be configured on all

nodes participating in Virtual Office logins. No other special configuration is

required.

For more information, refer to Emergency Services Access: Description and

Administration (553-3001-313).

802.1Q

The 802.1Q support for IP Phones is configured and controlled using the

telephone’s user interface or DHCP. The DHCP approach eliminates the

requirement to manually set the VLAN ID as part of the installation. The

configuration is composed of two items: setting the “p” bits and setting the

VLAN ID.

5The LTPS restarts the 911 call, thus reaching the correct PSAP.

Note: The extra processing adds 5 seconds to the call setup time.

6After the emergency call ends, the IP Phone remains registered to the Home

LTPS as a normal telephone, in case the PSAP makes a call back to the

originator of the emergency call.

After the IP Phone is redirected to its Home Site, it is not allowed to initiate a new

operation for five minutes. This prevents the user from accidentally dialing the

emergency DN and hanging up. In this case, the emergency response personnel

might call back to confirm the accidental call (and thus confirm that there is no

emergency). If the IP Phone were allowed to immediately resume a Virtual Office

If the local TN has another IP Phone Virtual Office logged into it when it comes

back, the non-emergency IP Phone is pre-empted.

Note: If this occurs, ESAxxx messages are generated on the system TTY.

Table 75

e911 process

Step Description