87Item DescriptionDial-up mode DTMF, compliant with GB3378 (Pulse dial-up is not available.)Bandwidth 300 to 3400 HzInterface LEDsFigure 93 MIM-16FXS panelTable 119 LED descriptionLED DescriptionLINK/ACT• Off: No link is present.• Steady green: A link is present and a call connection is being established.• Flashing yellow: A link is present and there is a call activity.Interface cables and the connection methodsFor more information about FXS interface cables and the connection methods, see"ADSL/BS/FXS/FXO/AM/FCM interface."MIM-2BSV/MIM-4BSVIntroductionThe 2-port (4-port) ISDN BRI S/T voice interface module MIM-2BSV (MIM-4BSV) is mainly used toprocess ISDN voice traffic. In the upstream direction, it can be connected to user interfaces on anISDN switch to receive and decompress, compress and transmit ISDN BRI digital voice traffic. In thedownstream direction, the module can be connected to TE devices to allow their voice traffic to beforwarded through a WAN interface on the router to the Internet, thus implementing VoIP. Theinterfaces on the MIM-2BSV/MIM-4BSV module are ITU-T I.430-compliant, adopting pseudo-ternarycoding, providing 192 Kbps rate, and allowing the maximum transmission distance of 1 km (0.6 miles)in point-to-point mode. MIM-2BSV/MIM-4BSV has the following features.• The BSV interfaces support two modes: user and network, respectively for connecting an ISDNnetwork and a TE device.• When a BSV interface works in network mode, traffic is processed as follows: The digital voicetraffic received on the BSV interface is compressed and forwarded through the CPU on themain control board to a WAN interface. The IP voice traffic received on a WAN interface isforwarded through the CPU on the main control board to MIM-2BSV/MIM-4BSV, where thetraffic is decompressed and sent to the TE device.
