Cisco 8800 Series Manual page 379

Cisco IP Phone Installation
IP Mode
Dual
Mode
Dual
Mode
IPv4
Only
IPv6
Only
SDP IP Preference - ALTC helps peers in dual-mode negotiate RTP address family.
Before you begin
Access the phone administration web page. See
Procedure
Step 1 Select Voice > SIP.
Step 2
In the SIP Parameters section, select IPv4 or IPv6 in the SIP IP Preference field.
For details, see SDP IP Preference field in the
Step 3 In the RTP Parameters section, select IPv4 or IPv6 in the SDP IP Preference field.
For details, see SDP IP Preference in the
SIP IP Address List from DNS, Priority, Result
Preference
P1 - First Priority Address
P2 - Second Priority Address
IPv4 P1- 2009:1:1:1::1
P2 - 2.2.2.2, 2009:2:2:2::2
Result: Phone will send the SIP messages to
2009:1:1:1::1 first.
IPv6 P1- 2009:1:1:1::1
P2 - 2.2.2.2, 2009:2:2:2::2
Result: Phone will send the SIP messages to 1.1.1.1
first.
IPv4 P1 - 1.1.1.1, 2009:1:1:1::1
or P2 - 2.2.2.2, 2009:2:2:2::2
IPv6 Result: Phone will send the SIP messages to 1.1.1.1
first.
IPv4 P1 - 1.1.1.1, 2009:1:1:1::1
or P2 - 2.2.2.2, 2009:2:2:2::2
IPv6 Result: Phone will send the SIP messages to
2009:1:1:1::1 first.
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
Control SIP and RTP Behaviour in Dual Mode
Access the Phone Web Interface, on page
SIP Parameters, on page 340
RTP Parameters, on page 355
Failover Sequence
2009:1:1:1:1 -> 2.2.2.2 ->
2009:2:2:2:2
2009:1:1:1:1 -> 2009:2:2:2:2
->2.2.2.2
1.1.1.1 -> 2.2.2.2
2009:1:1:1:1 ->
2009:2:2:2::2
104.
table.
table.
359