Cisco Hoot and Holler over IP Configuration Tasks
15
Cisco IOS Release 12.1(5)T
Configuring E&M Voice Ports (Required, if used)If using E&M voice ports, configure them by performing the following steps:
Command Purpose
Step1 Router(config)# voice class permanent tag1 Defines voice class for transmit-receive mode.
Step2 Router(config-class)# signal timing oos timeout
disabled
Disables signaling loss detection.
Step3 Router(config-class)# signal keepalive number Specifies keepalive signaling packet interval.
Step4 Router(config-class)# exit Returns to global configuration mode.
Step5 Router(config)# voice-port
router-slot/voice-slot/VIC-port Selects the voice port to configure.
Step6 Router(config-voice-port)# voice-class permanent tag1 Uses voice class tag1 for the port that is allowed to
speak.
Step7 Router(config-voice-port)# connection trunk
multicast-session-number Ties the voice port to a multicast-session number.
Step8 Router(config-voice-port)# music-threshold threshold (Optional) Sets the music threshold to make VAD
less sensitive.
Step9 Router(config-voice-port)# operation 4-wire Specifies 4-wire operation. (2-wire is the default.)
Step1 0 Router(config-voice-port)# type { 1 | 2 | 3 | 5 } Selects the appropriate E&M interface type
(depending on the end connection—such as PBX):
•Type 1 indicates the following lead
configuration (default—this is the
recommended option):
–
E—Output, relay to ground
–
M—Input, referenced to ground
•Type 2 indicates the following lead
configuration:
–
E—Output, relay to SG
–
M—Input, referenced to ground
–
SB—Feed for M, connected to -48V
–
SG—Return for E, galvanically isolated
from ground
•Type 3 indicates the following lead
configuration:
–
E—Output, relay to ground
–
M—Input, referenced to ground
–
SB—Connected to -48V
–
SG—Connected to ground
•Type 5 indicates the following lead
configuration:
–
E—Output, relay to ground
–
M—Input, referenced to -48V