Installation131Aastra 415/430 as of R3.2syd-0344/1.6 – R3.2 – 09.2014See alsoThe control inputs of ODAB cards can also be used to control switchgroups (see "Equipment on the ODAB options card", page 138).FXS mode: General bellOne FXS interface per communication server can be configured for the connectionof a general bell. It is possible to use commercial auxiliary bells designed for con-nection in parallel to analogue terminals as a general bell. However the impedanceof the connected general bell (or total impedance in the case of several devicesconnected in parallel) must not fall below 1 k. The ringing voltage is 48 VAC. A 48V relay must be interposed when connecting a large number of auxiliary bells.Fig. 57 Connection for FXS mode: General bellSee also"General bell on FXS interface" in the "System Functions and Features"System Manual.4. 7. 4 Emergency fan-out-panel (EFOP)1)To be able to make emergency calls even in the event of a mains power failure, youhave the possibility of running up to 8 analogue FXO exchange lines via the EFOP(emergency fan-out-panel). In the event of a power failure the EFOP switches ex-change lines automatically and directly over to up to 8 analogue phones.The EFOP fan-out-panel also monitors the voltage of the FXS lines to the communi-cation server. If for example ports are switched off due to overloading, the corre-sponding exchange lines switch over automatically and directly to the analoguephones.1) Available as of R2.1 SP148 VAC48 VACabFXS interface
