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Cisco Hoot and Holler over IP
Configuration Examples
23
Cisco IOS Release 12.1(5)T
Cisco Hoot and Holler over IP with Ethernet Topology (Two Hoot Groups)
Figure 5 Cisco Hoot and Holler over IP with Ethernet Topology
In this configuration, two hoot and holler groups are set up by defining two multicast groups
(237.111.0.111 and 237.111.0.112) and mapping the connection trunk 111 and connection trunk 112
commands from the voice ports to the VoIP dial peers associated with each group. Each router is
connected to a dedicated switch port, and IP precedence is set to 5 for all Cisco Hoot and Holler over
IP packets.
Router-1 (E&M 4-Wire Ports)
hostname Router-1
!
ip multicast-routing
!
voice class permanent 1
signal timing oos timeout disabled
signal keepalive 65535
!
interface Vif1
ip address 1.1.1.1 255.255.255.0
ip pim sparse-dense-mode
!
!
interface Ethernet0/0
ip address 1.5.13.1 255.255.255.0
ip pim sparse-dense-mode
!
router rip
network 1.1.1.0
network 1.5.13.0
!
voice-port 1/0/0
voice-class permanent 1
connection trunk 111
Router 1
35969
Router 3
Router 2
FXS
FXO FXO
PBX PBX
Group 1
Group 2
E&M
4-wire
E&M = ear and mouth
FXO = Foreign Exchange Office