48 Chapter 2 Introducing the BCM50 hardwareNN40020-302Digital station media bay moduleThe digital station media bay modules (DSM) support digital telephones on the BCM50 system.This section describes the DSM16+ and DSM32+ media bay modules. See the figure DSMfaceplate LEDs and connectors on page 48.The digital station media bay modules have the following characteristics:• DSM16+—supports 16 digital telephones through one RJ-21 connector.• DSM 32+—supports 32 digital telephones through two RJ-21 connectors.Figure 14 DSM faceplate LEDs and connectors4x16 media bay moduleThe 4x16 MBM provides both analog trunk connections and digital telephone connections. ThisMBM provides connections for four analog trunk lines and 16 digital telephones. Each of the fouranalog trunk lines support Caller ID and disconnect supervision. You can use an analog telephonydevice, such as a modem, fax, or telephone to share the trunk through the Aux port beside Line 1.The figure 4x16 faceplate LEDS and connectors on page 49 shows the 4x16 MBM. The 4x16MBM has one RJ-21 connector and five RJ-11 connectors on the faceplate.G4x16/G8x16Combination of a GATM4/GATM8 and aDSM16(see G4x16 and G8x16 media baymodule on page 49)Connects a maximum of four (G4x16) oreight (G8x16) analog public switchedtelephone lines to the BCM50 system.Also connects a maximum of 16 digitaltelephones to the BCM50 system.—GASM (ASM8)(see Analog station media bay moduleson page 49)Connects a maximum of eight analogdevices to the BCM50 system.This module provides the followingadditional services: caller ID, passthrough, message waiting indication, anddisconnect supervision at the telephone.This module downloads new firmware.—Note: See Market profile attributes on page 285 for supported regions.Table 4 Station MBMs (Sheet 2 of 2)Module type What it does Special NotesDSM 32DSM 16
