• 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
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)
Command Description
clear-call - terminate a current call established with the specified voice port ( name ) - port name to
clear call with
show-stats - show voice port statistics ( name ) - port name show statistics of ( time ) - maximal
time of packet round trip ( integer ) - number of packets sent by this card (these packets are input of
the voice port) ( integer ) - number of bytes sent by this card (these packets are input of the voice
port) ( text ) - minimal/average/maximal intervals between packets sent ( integer ) - number of
packets received by this card (these packets form output of the voice port) ( integer ) - number of
bytes received by this card (these packets form output of the voice port) ( text ) -
minimal/average/maximal intervals between packets received ( time ) - approximate delay time
from the moment of receiving an audio packet from the IP network till it is played back over the
telephony voice port. The value shown is never less than 30ms, although the actual delay time could
be less. If the shown value is >40ms, then it is close (+/-1ms) to the actual delay time.
monitor - monitor status of the voice port ( name ) - port name to monitor ( on-hook | off-hook |
ring | connection | busy ) - current state of the port:
• on-hook - the handset is on-hook, no activity
• off-hook - the handset is off-hook, the number is being dialed
• ring - call in progress, direction of the call is shown by the direction property
• connection - the connection has been established
• busy - the connection has been terminated, the handset is still off-hook
( 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
( 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
Notes
In contrary to analog voice ports phonejack, linejack, voicetronix, zaptel), which are as many as the
number of cards installed, the isdn ports can be added as many as desired.
Page 665 of 695
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