Specifications

SWITCHware System Administration Manual52

mailboxes, Asterisk will use a stutter dial tone rather than the ordinary dial tone. On supported hardware, the

message waiting light will also be activated — this probably requires that you also set adsi=yes. Update: This

option does NOT require ADSI. It will send a standard FSK tone down the line that lights up the MWI on any

capable analog phone.

Use incoming caller ID on zap transfer

If you set this option (Use Incoming Caller ID On Zap Transfer) to 'yes', then when you transfer a call to

another phone, the original caller's Caller ID will get forwarded on too. Default: no.

Caller ID Options

Caller ID

Sets the Caller ID string to forward to the recipient when calls come in from this channel. You normally use

this to set the Caller ID for handsets. Specify the Caller ID name in double quotation marks, followed by the

Caller ID number in <> symbols. For trunk lines, set to "asreceived" to pass the received Caller ID forward

Important Note:

Caller ID can only be transmitted to the public phone network with supported hardware, such as a PRI. It is

not possible to set external caller ID on analog lines.

Use Caller ID

For handsets, this option will cause Asterisk to send Caller ID data to the handset when ringing it. For trunk

lines, this option causes Asterisk to look for Caller ID on incoming calls. Default: yes

Hide Caller ID

(Not for FXO trunk lines) For PRI channels, this will stop the sending of Caller ID on outgoing calls. For FXS

handsets, this will stop Asterisk from sending this channel's Caller ID information to the called party when you

make a call using this handset. FXS handset users may enable or disable sending of their Caller ID for the

current call only by lifting the handset and dialing *82 (enable) or *67 (disable); you will then get a "dial

recall" tone whereupon you can dial the number of the extension you wish to contact. Default: no

Restrict CID

(PRI channels only) This option has effect only when hidecallerid=no. If hidecallerid=no and restrictcid=yes,

Asterisk will prevent the sending of the Caller ID data as a presentation number when making outgoing calls

(ANI data is still sent). Default: no

Use Calling Pres

(PRI channels only) Whether or not to use the Caller ID presentation for the outgoing call that the calling

switch is sending. See also the "CallingPres"

Audio Quality Tuning Options

These options adjust certain parameters of Asterisk that affect the audio quality of Zapata channels. See

also:

Relax DTMF

If you are having trouble with DTMF detection, you can relax the DTMF detection parameters. Relaxing them

may make the DTMF detector more likely to have "talkoff" where DTMF is detected when it shouldn't be.

Default: no

Echo Cancel

Disable or enable echo cancellation (default is 'yes'). It is recommended that you do not turn this off. You

may specify echocancel as 'yes' (128 taps), 'no' (0 taps, disabled), or a preset number of taps which are one

of 16, 32, 64, 128, or 256. Each tap is one sample from the data stream, so on a T1 this will be 1/8000 of a

second. Accordingly the number of taps equate to a 2ms, 4ms, 8ms, 16ms or 32ms tail length.