Expansion Stages and System Capacity50 Aastra 415/430 as of R3.2syd-0344/1.6 – R3.2 – 09.2014Notes– To configure VoIP channels on the DSP chip of a DSP module, makesure the ( =ym) VoIP mode parameter in the DSP configuration is notset to No VoIP. The setting is valid for all the DSP chips of a node. If VoIPmode is set to G.711, two G.711 VoIP channels per system can be usedwithout a licence. The G.711 VoIP channels of the mainboard can becombined with G.711 VoIP channels of DSP modules.– If audio channels are configured and licensed, the two basic audiochannels that can be used without a licence are redundant (seeTab. 15).– Audio channels and FoIP channels can only be configured on one DSPchip per node.– The Modem function is used for remote maintenance via an analoguemodem and can only be configured on the mainboard’s DSP.– The system has to be restarted for the configuration changes of theDSP to take effect.– After a first start all the DSP chips are configured on DECT.3. 3. 2 Interface cardsInterface cards can be assigned to three categories:• Trunk cardsThese cards provide interfaces for connection to public dial-up networks or fornetworking systems to create a private telephony network.• Terminal cardsThese cards provide interfaces for connecting digital and analogue voice anddata terminals.• Options cardsThis category comprises the ODAB card, the interfaces for connecting a door in-tercom, for controlling external devices, and for switching over internal switchgroups.On some cards some of the interfaces are configurable (BRI-S/T). This means thatthese cards cannot be clearly assigned to any particular category. They are listedboth among the trunk cards and the terminal cards.Interface cards are fitted into slots IC1...IC4 (see Fig. 7).The interfaces are routed to the front panel using the Wiring Adapters (see "WiringAdapter", page 54).
