• phone - telephone connected to the card (POTS FXS port)
• line - line connected to the card (PSTN FXO port)
( ip-to-port | port-to-ip ) - direction of the call
• ip-to-port - call from the IP network to the voice card
• port-to-ip - call from the voice card to an IP address
( plugged | unplugged ) - state of the PSTN line
• plugged - the telephone line is connected to the PSTN port of the card
• unplugged - there is no working line connected to the PSTN port of the card
( integer ) - the phone number being dialed ( text ) - name and IP address of the remote party (
name ) - CODEC used for the audio connection ( time ) - duration of the phone call
Zaptel Voice Ports
Home menu level: /ip telephony voice-port zaptel
Property Description
name ( name ) - name given by the user or the default one
autodial ( integer ; default: "" ) - phone number which will be dialed immediately after the
handset has been lifted. If this number is incomplete, then the remaining part has to be dialed on the
dial-pad. If the number is incorrect, the line is hung up. If the number is correct, then the
appropriate number is dialed (the direct-call mode is used - the line is picked up only after the
remote party answers the call)
playback-volume ( integer : -48 ..48 ; default: 0 ) - playback volume in dB
• 0 - 0dB meand no change to signal level
record-volume ( integer : -48 ..48 ; default: 0 ) - record volume in dB
• 0 - 0dB meand no change to signal level
region ( name ; default: us ) - regional setting for the voice port. This setting is used for setting the
parameters of PSTN line, as well as for detecting and generating the tones
aec ( yes | no ) - wheteher echo detection and cancellation is enabled
aec-tail-length ( short | medium | long ; default: short ) - size of the buffer of echo detection
aec-nlp-threshold ( off | low | medium | high ; default: low ) - level of cancellation of silent sounds
aec-attenuation-scaling ( integer : 0 ..10 ; default: 4 ) - factor of additional echo attenuation
aec-attenuation-boost ( integer : 0 ..90 ; default: 0 ) - level of additional echo attenuation
software-aec ( yes | no ) - software echo canceller (experimental, for most of the cards)
agc-on-playback ( yes | no ; default: no ) - automatic gain control on playback (can not be used
together with hardware voice codecs)
agc-on-record ( yes | no ; default: no ) - automatic gain control on record (can not be used together
with hardware voice codecs)
detect-cpt ( yes | no ; default: no ) - automatically detect call progress tones
Command Description
clear-call - terminate a current call established with the specified voice port ( name ) - port name to
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