Features Page 251 of 910
IP Line Description, Installation and Maintenance
Phone 2002, IP Phone 2004, IP Phone 2007, or IP Softphone 2050 user logs
in from an IP Phone 2001 or IP Audio Conference Phone 2033, the login is
blocked if the user’s configuration has one of the following:
• key 0 defined as ACD
• any other key (from key 1 to key 15) defined as AAK, CWT, DIG, DPU,
GPU, ICF, MCN, MCR, MSB, PVN, PVR, SCR or SCN.
Enhanced Redundancy for IP Line nodes
The Enhanced Redundancy for IP Line nodes feature relaxes the checking
performed by a node on the Node ID that is presented by a registering
IP Phone. Under the circumstances described in this section, an IP Phone with
a 3-digit Node ID can register to a node that is configured with a 4-digit Node
ID. To enable the registration to be successful, the 3-digit Node ID must
match the first 3 digits of the node’s 4-digit Node ID.
This feature enhances the IP Phone’s survivability in the case of network
outages or equipment failure, as it allows an IP Phone to register to more than
one node on a system. By configuring the IP Phone’s S1 and S2 Connect
Server IP addresses to the node addressees of two different nodes, and
properly configuring the Node IDs, the IP Phone is able to register to another
secondary node if it cannot register to the primary node.
The rules are as follows:
• if the Node ID on the system has 3 digits or less, the Node ID from the
IP Phone must match exactly
• if the Node ID on the system has 4 digits and:
— the Node ID from the IP Phone has fewer than 3 digits, reject the
registration
— the Node ID from the IP Phone has 4 digits, the Node ID must match
exactly
— if the Node ID from the IP Phone has 3 digits and they match the first
3 digits of the node's 4 digit Node ID (left to right), then allow the
IP Phone to register. If the first three digits do not match, reject the
registration.