С помощью файла oss.conf Asterisk конфигурируется для использования драйвера OSS (Open Sound System – открытая звуковая система), чтобы сделать возможным обмен информацией со звуковой картой по каналу CONSOLE.
В настоящее время предпочтительным интерфейсом для канала CONSOLE является ALSA. (см. также alsa.conf).
; Automatically generated from ../channels/chan_oss.c
; General config options, with default values shown.
; You should use one section per device, with [general] being used
; for the first device and also as a template for other devices.
; All but 'debug' can go also in the device-specific sections.
; debug = 0x0 ; misc debug flags, default is 0
; Set the device to use for I/O
; device = /dev/dsp
; Optional mixer command to run upon startup (e.g. to set
; volume levels, mutes, etc.
; mixer =
; Software mic volume booster (or attenuator), useful for sound
; cards or microphones with poor sensitivity. The volume level
; is in dB, ranging from -20.0 to +20.0
; boost = n ; mic volume boost in dB
; Set the callerid for outgoing calls
; callerid = John Doe <555-1234>
; autoanswer = no ; no autoanswer on call
; autohangup = yes ; hangup when other party closes
; extension = s ; default extension to call
; context = default ; default context for outgoing calls
; language = "" ; default language
; If you set overridecontext to 'yes', then the whole dial string
; will be interpreted as an extension, which is extremely useful
; to dial SIP, IAX and other extensions which use the '@' character.
; The default is 'no' just for backward compatibility, but the
; suggestion is to change it.
; overridecontext = no ; if 'no', the last @ will start the context
; if 'yes' the whole string is an extension.
; low level device parameters in case you have problems with the
; device driver on your operating system. You should not touch these
; unless you know what you are doing.
; queuesize = 10 ; frames in device driver
; frags = 8 ; argument to SETFRAGMENT
;------------------------------ JITTER BUFFER CONFIGURATION --------------------------
; jbenable = yes ; Enables the use of a jitterbuffer on the receiving side of an
; OSS channel. Defaults to "no". An enabled jitterbuffer will
; be used only if the sending side can create and the receiving
; side can not accept jitter. The OSS channel can't accept jitter,
; thus an enabled jitterbuffer on the receive OSS side will always
; be used if the sending side can create jitter.
; jbmaxsize = 200 ; Max length of the jitterbuffer in milliseconds.
; jbresyncthreshold = 1000 ; Jump in the frame timestamps over which the jitterbuffer is
; resynchronized. Useful to improve the quality of the voice, with
; big jumps in/broken timestamps, usually sent from exotic devices
; and programs. Defaults to 1000.
; jbimpl = fixed ; Jitterbuffer implementation, used on the receiving side of an OSS
; channel. Two implementations are currently available - "fixed"
; (with size always equals to jbmax-size) and "adaptive" (with
; variable size, actually the new jb of IAX2). Defaults to fixed.
; jbtargetextra = 40 ; This option only affects the jb when 'jbimpl = adaptive' is set.
; The option represents the number of milliseconds by which the new
; jitter buffer will pad its size. the default is 40, so without
; modification, the new jitter buffer will set its size to the jitter
; value plus 40 milliseconds. increasing this value may help if your
; network normally has low jitter, but occasionally has spikes.
; jblog = no ; Enables jitterbuffer frame logging. Defaults to "no".
; below is an entry for a second console channel
; device = /dev/dsp1 ; alternate device
; Below are the settings to support video. You can include them
; in your general configuration as [general](+,video)
; The parameters are all available through the CLI as "console name value"
; Section names used here are only examples.
[my_video](!) ; you can just include in your config
videodevice = /dev/video0 ; uses your V4L webcam as video source
videodevice = X11 ; X11 grabber. Dragging on the local display moves the origin.
videocodec = h263 ; also h261, h263p, h264, mpeg4, ...
; video_size is the geometry used by the encoder.
; Depending on the codec your choice is restricted.
video_size = 352x288 ; the format WIDTHxHEIGHT is also ok
video_size = cif ; sqcif, qcif, cif, qvga, vga, ...
; You can also set the geometry used for the camera, local display and remote display.
; The local window is on the right, the remote window is on the left.
; Right clicking with the mouse on a video window increases the size,
; center-clicking reduces the size.
camera_size = cif
remote_size = cif
local_size = qcif
bitrate = 60000 ; rate told to ffmpeg.
fps = 5 ; frames per second from the source.
; qmin = 3 ; quantizer value passed to the encoder.
; The keypad is made of an image (in any format supported by SDL_image)
; and some configuration entries indicating the location and function of buttons.
; These entries can also be contained in the comment field of the image,
; which is a lot more convenient to manage.
; E.g. for jpeg you can write them with wrjpgcom (part of libjpeg).
; The format to define keys is
; region = x0 y0 x1 y1 h
; where is the event to be generated (a digit, pickup, hangup,...)
; is the shape of the region (currently 'rect' and 'circle' are
; supported, the latter is really an ellipse), x0 y0 x1 y1 are the
; coordinates of the base of the rectangle or main diameter of the ellipse,
; (they can be rotated) while h is the height of the rectangle or the other
; diameter of the ellipse.
keypad = /tmp/keypad.jpg
region = 1 rect 19 18 67 18 28
region = 2 rect 84 18 133 18 28
region = 3 rect 152 18 201 18 28
region = 4 rect 19 60 67 60 28
region = 5 rect 84 60 133 60 28
region = 6 rect 152 60 201 60 28
region = 7 rect 19 103 67 103 28
region = 8 rect 84 103 133 103 28
region = 9 rect 152 103 201 103 28
region = * rect 19 146 67 146 28
region = 0 rect 84 146 133 146 28
region = # rect 152 146 201 146 28
region = pickup rect 229 15 267 15 40
region = hangup rect 230 66 270 64 40
region = mute circle 232 141 264 141 33
region = sendvideo circle 235 185 266 185 33
region = autoanswer rect 228 212 275 212 50
; another skin with entries for the keypad and a small font
; to write to the message boards in the skin.
keypad = /tmp/kpad2.jpg
keypad_font = /tmp/font.png
; to add video support, uncomment this and remember to install
; the keypad and keypad_font files to the right place