Installation and initial configuration of an IP Telephony node Page 359 of 910
IP Line Description, Installation and Maintenance

Node election rules

The rules for the node election process are as follows:
1A Signaling Server wins over any Voice Gateway Media Cards.
2A Leader card always wins over a Follower card.
3A Media Card wins over an ITG-P card.
4Within each class (Leader/Follower), the card with the longest up-time
wins.
5In the event of a tie in up-time length, the card with the lowest IP address
wins.
The precedence of the rules is from 1 (highest) to 5 (lowest). This means, for
example, that since Rule 2 is applied before Rule 3, a Media Card Follower
card cannot win over an ITG-P Leader card.
Key 23 SCU, SSU, SCC, SSC, NUL
SCU – Speed Call User
SSU – System Speed Call User
SCC – Speed Call Controller
SSC – System Speed Call Controller
Key 24 PRS, NUL
PRS – Privacy Release key
Key 25 CHG, NUL
CHG – Charge Account key
Key 26 CPN, NUL
CPN – Calling Party Number key
Table 70
LD 11 – IP Phone dedicated soft key assignment (Part 2 of 2)
IP Phone
key number Response(s) Allowed