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Configuring E&M Voice Ports

Configuring Voice over IP for Cisco MC3810 Series Concentrators 23

router(config-voiceport)# type {1 | 2 | 3 | 5}

Select the appropriate E&M interface type.

Type 1 lead conﬁguration:

E—output, relay to ground

M—input, referenced to ground

Type 2 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 lead conﬁguration:

E—output, relay to ground

M—input, referenced to ground

SB—connected to –48V

SG—connected to ground

Type 5 lead conﬁguration:

E—output, relay to ground

M—input, referenced to –48V.

router(config-voiceport)# signal {wink-start |

immediate | delay-dial}

Conﬁgure the E&M signaling type. The default is wink-start.

router(config-voiceport)# cptone

country

Select the appropriate call progress tone for your country

location.

The default is northamerica. For a list of supported countries,

refer to the Voice, Video, and Home Applications Command

Reference.

router(config-voiceport)# compand-type {u-law |

a-law}

Conﬁgure the companding standard used to convert between

analog and digital signals in PCM systems. Defaults are: u-law

for T1; a-law for E1.

router(config-voiceport)# no vad

(Optional) Disable voice activity detection (VAD). VAD is

enabled by default.

router(config-voiceport)# comfort-noise

(Optional) Enable background noise if VAD is enabled.

router(config-voiceport)# music-threshold

number

(Optional) Specify the maximum volume (in dBm) for on-hold

music. Valid entries are –70 to –30. The default is –38.

router(config-voiceport)# voice

confirmation-tone

(Optional) If the voice port is conﬁgured for connection

plar-opx for Off-Premises eXtension, disable the two-beep

conﬁrmation tone that a caller hears when picking up the

handset.

router(config-voiceport)# description

string

(Optional) Describe the location, connected equipment, or other

information about the voice port. The description is displayed

when a show command is entered.

router(config-voice-port)#exit

Exit from voice-port conﬁguration mode.

Step Command Purpose

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Cisco MC3810 Guía de instalación Pagina 23

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