
Cisco Hoot and Holler over IP
Configuration Tasks
16
Cisco IOS Release 12.1(5)T
Configuring for Receive Only Mode (Optional)To configure Cisco Hoot and Holler over IP as receive-only mode, perform the following steps:
Configuring Relevant Interface (Serial/Ethernet) (Required)To configure either the serial or Ethernet interface, perform the following steps:
Step1 1 Router(config-voice-port)# signal { wink-start | 
immediate | delay-dial } Configures the signaling type for E&M voice 
ports. The default is wink-start. Select 
immediate for the Cisco Hoot and Holler over IP 
application. In the immediate-start protocol, the 
originating side does not wait for a wink before 
sending addressing information. After receiving 
addressing digits, the terminating side then goes 
off-hook for the duration of the call. The 
originating endpoint maintains off-hook for the 
duration of the call.
Step1 2 Router(config-voice-port)# voice-port
router-slot/voice-slot/VIC-port Selects another voice port.
Step1 3 Router(config-voice-port)# voice-class permanent tag2 Uses voice class tag2 for the receive-only port.
Step1 4 Router(config-voice-port)# connection trunk
multicast-session-number Ties the voice port to the same multicast-session 
number as in Step 12.
Step1 5 Router(config-voice-port)# music-threshold threshold (Optional) Sets the music threshold to make VAD 
less sensitive.
Step1 6 Router(config-voice-port)# operation 4-wire Specifies 4-wire operation. (2-wire is the default.)
Command Purpose
Command Purpose
Step1 Router(config-class)# voice class permanent tag2 Defines voice class for receive-only mode.
Step2 Router(config-class)# signal pattern oos receive 0000 Specifies the received signal pattern.
Step3 Router(config-class)# signal timing oos suppress-all
seconds
If the transmit out-of-service pattern (from the 
PBX to the network) matches for the time 
specified, the router stops sending packets to the 
network.
Step4 Router(config-class)# signal keepalive number Specifies keepalive signaling packet interval.
Command Purpose
Step1 Router(config)# interface { ethernet | serial } 
slot/port Configures the physical interface (serial/Ethernet) 
for transmitting multicast packets.
Step2 Router(config-if)# ip address address subnet-mask Assigns the IP address and subnet mask for the 
interface.