Cisco Hoot and Holler over IP
Configuration Examples
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
E&M |
|
FXS | |
Router 1 | Router 2 |
35969
| Router 3 | Group 1 | |
FXO | FXO | ||
| |||
PBX | PBX | Group 2 | |
|
E&M = ear and mouth
FXO = Foreign Exchange Office
FXS = Foreign Exchange Station
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
hostname
!
ip
!
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
!
interface Ethernet0/0
ip address 1.5.13.1 255.255.255.0 ip pim
!
router rip network 1.1.1.0
Cisco IOS Voice, Video, and Fax Configuration Guide