Asterisk Project : Call Pickup This page last changed on Sep 20, 2012 by rmudgett. # 1. Overview Call pickup allows you to answer an incoming call from another phone. Requesting to pickup a call is done by two basic methods. 1) by dialplan using the Pickup or PickupChan applications. 2) by dialing the pickupexten configured in features.conf. Which calls can be picked up is determined by configuration and dialplan. # 2. Dialplan Applications and Functions ## 2.1. Pickup Application The Pickup application has three ways to select calls for pickup. 1) With no parameters, Pickup selects calls using the numeric and named call groups like the pickupexten. 2) Extension with PICKUPMARK, Pickup selects calls with the PICKUPMARK channel variable matching the extension. 3) Extension with or without a context, Pickup selects calls with the matching extension and context. ## 2.2. PickupChan Application The PickupChan application tries to pickup the specified channels given to it. ## 2.3. CHANNEL Function The CHANNEL function allows the pickup groups set on a channel to be changed from the defaults set by the channel driver when the channel was created. ### 2.3.1. callgroup/namedcallgroup The CHANNEL(callgroup) option specifies which numeric pickup groups that this channel is a member.
    same => n,Set(CHANNEL(callgroup)=1,5-7)
The CHANNEL(namedcallgroup) option specifies which named pickup groups that this channel is a member.
    same => n,Set(CHANNEL(namedcallgroup)=engineering,sales)
| NOTES For this option to be effective, you must set it on the outgoing channel. You can use the setvar option available with several channel driver configuration files to set the pickup groups. You can use a pre-dial handler.
### 2.3.2. pickupgroup/namedpickupgroup The CHANNEL(pickupgroup) option specifies which numeric pickup groups this channel can pickup.
    same => n,Set(CHANNEL(pickupgroup)=1,6-8)
The CHANNEL(namedpickupgroup) option specifies which named pickup groups this channel can pickup.
    same => n,Set(CHANNEL(namedpickupgroup)=engineering,sales)
| NOTES For this option to be effective, you must set it on the channel before executing the Pickup application or calling the pickupexten. You can use the setvar option available with several channel driver configuration files to set the pickup groups.
# 3. Configuration Options The pickupexten request method selects calls using the numeric and named call groups. The ringing channels have the callgroup assigned when the channel is created by the channel driver or set by the CHANNEL(callgroup) or CHANNEL(namedcallgroup) dialplan function. Calls picked up using pickupexten can hear an optional sound file for success and failure.
| The current channel drivers that support calling the pickupexten to pickup a call are: chan_dahdi/analog, chan_mgcp, chan_misdn, chan_sip, and chan_unistim.
features.conf
    pickupexten = *8               ; Configure the pickup extension. (default is *8)
    pickupsound = beep             ; to indicate a successful pickup (default: no sound)
    pickupfailsound = beeperr      ; to indicate that the pickup failed (default: no sound)
## 3.1. Numeric call pickup groups A numeric callgroup and pickupgroup can be set to a comma separated list of ranges (e.g., 1-4) or numbers that can have a value of 0 to 63. There can be a maximum of 64 numeric groups. Syntax
    callgroup=[number[-number][,number[-number][,...]]]
    pickupgroup=[number[-number][,number[-number][,...]]]
callgroup - specifies which numeric pickup groups that this channel is a member. pickupgroup - specifies which numeric pickup groups this channel can pickup. chan_dahdi.conf/analog, misdn.conf, mgcp.conf, sip.conf, unistim.conf
    callgroup=1,5-7
    pickupgroup=1
## 3.2. Named call pickup groups A named callgroup and pickupgroup can be set to a comma separated list of case sensitive name strings. The number of named groups is unlimited. The number of named groups you can specify at once is limited by the line length supported. Syntax
    namedcallgroup=[name[,name[,...]]]
    namedpickupgroup=[name[,name[,...]]]
namedcallgroup - specifies which named pickup groups that this channel is a member. namedpickupgroup - specifies which named pickup groups this channel can pickup. chan_dahdi.conf/analog, misdn.conf, sip.conf
    namedcallgroup=engineering,sales,netgroup,protgroup
    namedpickupgroup=sales
| NOTES You can use named pickup groups in parallel with numeric pickup groups. For example, the named pickup group '4' is not the same as the numeric pickup group '4'. Named pickup groups are new with Asterisk 11.

Document generated by Confluence on Nov 02, 2012 17:42