When there is a call to a station device (Anate or Digite), it is possible to acoustically call other station devices that belong to the same group if they are programmable (parallel call). All station devices called in parallel receive the same type of call (normal, CO, or special call) and, in the case of Digite, the same display information.

The call goes to the first user in the group to pick up or to take over the call by using the call pickup button or dialing the pickup call code.

• All station devices that you want to be called in parallel must belong to the same call pickup group and be specially identified for administration purposes (in the Class of Service COS).
• All Digites that are not marked for parallel calling in the call pickup group receive the normal call pickup group signal (display, LED, and alerting call).
• If the code for parallel call is not set in the alternative COS, the user can switch off or on his or her property as member of the group from "station called in parallel" to "station only active for call pickup signaling" by performing a class of service switch.
• During parallel signaling, the system does not check if there is authorization to pickup up or answer the call. Therefore when you configure the group, you should make sure that all users in the group have the necessary authorization (class of service). If not, the user receives a negative acknowledge when answering a parallel call.
• Group call is not implemented for functional terminals. Group call is also allowed for Anates that are connected to optiPoints via terminal T/R adapter.
• The maximum number of groups for group call corresponds to the maximum number of call pickup groups: 1000.
• The maximum number of station devices called in parallel in a group is (as for call pickup groups) 255. However when doing the configuration, note that there is not more than 1 ringing current generator per shelf, so that if more than 10 Anates are simultaneously supplied by the same ringing current generator, the ringing may be not as loud.
• The parallel call to the group is only set up at the end of the initial call. After a user becomes free, there is not a check for additional calls.