User's Manual

Page 38 of 910 Description
553-3001-365 Standard 4.00 August 2005
Software delivery
IP Line 4.5 supports software delivery through the following formats:
1 CompactFlash
2 Signaling Server CD-ROM
3 Download from the Nortel web site
Note: Stand-alone IP Line 4.5 software is not available through
CD-ROM.
2 If the primary Signaling Server fails, the backup Signaling Server takes over and
all IP Phones register with the backup Signaling Server.
3 If the backup Signaling Server fails, one of the Voice Gateway Media Cards is
elected to be the node Master.
4 The IP Phones then register to the Voice Gateway Media Cards.
Without a backup Signaling Server
1 If there is no backup Signaling Server, and the primary Signaling Server fails, one
of the Voice Gateway Media Cards is elected to be the node Master.
2 The IP Phones then register to the Voice Gateway Media Cards.
Table 3
Methods of Signaling Server redundancy (Part 2 of 2)
Stage Description