Specifications

Trunks 51
© 2003-2008 Bicom Systems
Analog Handset Features
ADSI
If your handset has ADSI (Analog Display Services Interface) capability, set adsi=yes. The ADSI specification is
system similar to Caller ID to pass encoded information to an analog handset. It allows the creation of
interactive visual menus on a multi line display, offering access to services such as voicemail through a text
interface.
Immediate
Normally (i.e. with immediate set to 'no', the default), when you lift an FXS handset, the Zaptel driver
provides you a dial tone and listens for digits that you dial, passing them on to Asterisk. Asterisk waits until
the number you've dialed matches an extension, and then begins executing the first command on the
matching extension. If you set immediate=yes, then Asterisk will instruct the Zaptel driver to not generate a
dial tone when you lift a handset, instead passing control immediately to Asterisk. Asterisk will start executing
the commands for this channel's "s" extension. This is sometimes referred to as "batphone mode". Default:
no.
Call Waiting
If enabled, Asterisk will generate "call waiting pips" when you are already in a conversation on your FXS
handset when someone tries to call you. If the channel has call waiting by default, you can temporarily
disable it by lifting the handset and dialing *70, whereupon you will get a dial recall tone and may then dial
the intended number. There is no corresponding way to temporarily enable call waiting for channels that
have it off by default. Default: no
Call waiting caller ID
Sets whether Asterisk will send Caller ID data to the handset during call waiting indication. Requires also
setting call waiting=yes. Default: no.
Three way calling
If enabled, you can place a call on hold by pressing a hook flash, whereupon you get a dial recall tone and
can make another call. Default: no
Transfer
This option has effect only when threewaycalling=yes. If threewaycalling=yes and transfer=yes, then once
you've placed a call on hold with a hook flash, you can transfer that call to another extension by dialing the
extension and hanging up. Default: no
Can call forward
If enabled, you may activate "call forwarding immediate" by dialing *72 (whereupon you get a dial recall tone)
followed by the extension number you wish to forward your calls to. If someone dials your extension, the call
will be redirected to the forwarding number. You may disable the call forwarding by dialing *73. Default: no
Call Return
If enabled, you may dial *69 to have Asterisk read to you the caller ID of the last person to call. You will hear
the dial recall tone if there is no record of a last caller. Default: no
Call Group
A channel may belong to zero or more call groups. Call groups specify who may answer this phone when it is
ringing. If this channel is ringing, then any other channel whose pickup groups include one of this channel's
callgroups may answer the call by dialing *8#. This feature is supported by Zap, SIP, Skinny and MGCP
channels. Group numbers can range from 0 to 31. The default value is an empty string, i.e. no groups
Pick up group
A channel may belong to zero or more pickup groups. Pickupgroups specify whose phones you may answer.
If another channel is ringing, and this channel's pickup groups include one of the ringing channel's call groups,
then this channel may answer the call by dialing *8#. Group numbers can range from 0 to 31. The default
value is an empty string, i.e. no groups.
Mailbox
If this option is defined for a channel, then when the handset is lifted, Asterisk will check the voicemail
mailbox(es) specified here for new (unheard) messages. If there are any unheard messages in any of the