iNotice!Although it is not mandatory, not assigning a line to a call group, or when there is only oneline in the group, 1 min of busy time during a 10 min period results in a Busy Seconds Report.If you do not assign a line to a call group, displays and printer reports identify the line numberinstead of the Group number. A Line Busy Report shows and prints:Two-Way AudioWhen using the D6600/D6100IPv6 for Two-Way Audio (TWA) verification, use the Flash or Holdoption according to the central station Private Branch Exchange (PBX) system, taking theD6600/D6100IPv6 off line for a short period. If a PBX is not used, connect a regular telephonein parallel with the incoming telephone line. When the D6600/D6100IPv6 is in Two-Way AudioMode, the operator can pick up the telephone and undertake the two way audio operation.Return the telephone to the receiver after the two-way audio operation finishes.iNotice!D6600 Two-Way Audio (TWA) verification is fully supported using the D6641 line card. TheD6640 does not support option 3.1.4.21 Audio Event, 3.1.4.22 Audio Zone, or protocol specif-ic audio events used in SIA and Contact ID.iNotice!D6100IPv6 Two-Way Audio was not investigated by UL.The D6600/D6100IPv6 verifies the first digit of the account code range 0 to F programmed inthe Account Digits option for the following communication formats:– Pulse (3 or 4 digit account code)– DTMF– BFSK– Modem II/IIIa2//4– SIAIf the received account code is two-way audio enabled, the line card goes into Two-way AudioMode. Programming a non-zero number in the Two Way Audio Duration option affects allformats, and the control panels cannot control the two-way audio duration over the D6600/D6100IPv6.If the qualifying criteria apply, the D6600/D6100IPv6 sends a signal to the automationfirmware indicating the physical line is in Two-Way Audio Mode. The line remains off-hook forthe time programmed in minutes in the Two-Way Audio Duration option.-or-When the flash option is set for 1 to 20 (100 ms to 2 sec), the CPU first sends the two-wayaudio signal to automation firmware. Then the line is flashed (quickly disconnected andreconnected) for the programmed flash duration. It remains off-hook for another 5 sec thenhangs up.-or-11.6Conettix Communications Receiver/Gateway D6600/D6100IPv6 Operation | en 39Bosch Security Systems, Inc. Installation and Operation Guide 2012.11 | 08 | 4998122704