Nortel Networks 400 4.0, BCM200 manual 4x16 media bay module, Analog station media bay modules

58Chapter 2 Introducing the BCM hardware

4x16 media bay module

The 4x16 media bay module (MBM) provides both analog trunk connections and connections to digital telephones. The 4x16 MBM provides connections for four analog trunk lines and 16 digital telephones. Each of the four analog trunk lines support caller ID and disconnect supervision. An auxiliary port next to the Line 1 port enables you to use an analog telephony device, such as a modem, fax, or telephone, to share the trunk.

Figure 32 shows the 4x16 MBM. The 4x16 MBM has one RJ-21 connector and five RJ-11 connectors on the faceplate.

Figure 32 4x16 faceplate LEDS and connectors

Analog station media bay modules

The analog station media bay modules (ASM, ASM8, ASM8+, and GASM8) can connect to a maximum of eight analog telecommunication devices. These devices are standard analog telephones, cordless telephones, fax machines, answering machines, or modems. The maximum speed for a modem connection is 28.8 kbit/s.

In addition to ASM8 features, the ASM8+ and GASM8 offer the following features:

•Visual Message Waiting Indicator (VMWI) — LED indicates to the end user that a message is waiting.

•Disconnect supervision (Open Switch Interval [OSI] as per EIA/TIA 464) — indicates to the attached device, in an established communication, that the connected device should release the call (see disconnect supervision note).

•Caller ID — provides the name, phone number, and other information about the caller to the end user at the start of the call.

•Firmware downloading capability — allows the system to upgrade the ASM8+ and GASM8 firmware at customer sites.

•Enhanced ringing capability — ASM8+ and GASM8 provide a ringing voltage of 2 REN/65 V rms per port.

•Calling line identification (CLID)

•The GASM8 is designated as an ONS (on-premise station) port.

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