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Cisco Hoot and Holler over IP
Configuration Examples
VC-849
Cisco IOS Voice, Video, and Fax Configuration Guide
Cisco Hoot and Holler over IP with Ethernet Topology (Two Hoot Groups)
The following figure illustrates Cisco hoot and holler over IP being used with an Ethernet topology:
Figure 135 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
(237.16.8.11 and 237.16.26.12) and mapping the connection command and trunk keyword (specifying
11) and connection command and trunk keyword (specifying 12) 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 Four-Wire Ports)
The following output shows that Router 1 has been configured for E&M four-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
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
FXS = Foreign Exchange Station