CHANNEL — Gets or sets various channel parameters
Standard items (provided by all channel technologies) are:
audioreadformatRead-only. Format currently being read.
audionativeformatRead-only. Format used natively for audio.
videonativeformatRead-only. Format used natively for video.
audiowriteformatRead-only. Format currently being written.
callgroupRead/write. Callgroups for call pickup.
channeltypeRead-only. Technology used for channel.
languageRead/write. Language used for sounds played and recorded.
musicclassRead/write. Class used (from musiconhold.conf) for hold music.
rxgainRead/write. Receive gain (in dB) on channel drivers that support it.
txgainRead/write. Transmit gain (in dB) on channel drivers that support it.
tonezoneRead/write. Regional zone for indications played.
stateRead-only. Current channel state.
transfercapabilityRead/write. What can be transferred on an ISDN circuit. Current valid values are:
SPEECHSpeech (default, voice calls)
DIGITALUnrestricted digital information (data calls)
RESTRICTED_DIGITALRestricted digital information
3K1AUDIO3.1 kHz Audio (fax calls)
DIGITAL_W_TONESUnrestricted digital information with tones/announcements
VIDEOVideo
Additional items may be available from the channel driver providing the channel; see its documentation for details. Any item requested that is not available on the current channel will return an empty string.