Nortel BCM50 2.0 Installation Manual

Also see for BCM50 2.0: User guide System overview guide User guide Configuration guide User guide

Contents

Nortel BCM50 2.0 Installation Manual Manual pdf 19 page image

19Telephony Device Installation GuideChapter 3Installing an analog station media bay moduleYou can connect a a maximum of eight analog telecommunication devices to the analog stationmedia bay modules (ASM8, ASM8+, and GASM). These devices are standard analog telephones,cordless telephones, fax machines, answering machines, or modems. The maximum speed for amodem connection is 28.8 kbit/s.The ASM8 is available in North America only; the ASM8+ and GASM8 are available in NorthAmerica, the United Kingdom, Australia, and Poland.In addition to ASM8 features, the ASM8+ and GASM offer the following features:• Visual Message Waiting Indicator (VMWI)—LED indicates to the end user that a message iswaiting• disconnect supervision (Open Switch Interval [OSI] according to EIA/TIA 464)—indicates tothe attached device, in an established communication, that the connected device must releasethe call• caller ID—provides the name, phone number, and other information about the caller to the enduser at the start of the call• firmware downloading capability—allows the system to upgrade the ASM8+ and GASMfirmware at customer sites• enhanced ringing capability—ASM8+ and GASM provide a ringing voltage of two REN/65 Vrms per port.• GASM8—designated as an on-premise station (OPS) portThe ASM8, ASM8+, and GASM each have one RJ-21 connector on the faceplate. Figure 1 onpage 20 shows the GASM faceplate.Note: When disconnect happens from the central office (CO), the ASM8+provides an OSI to the off-hook station of 850 ms (TIA/EIA 464 section5.4.10.2.4; minimum is 600 ms) as a disconnect signal. If the station remainson-hook after the disconnect signal, the ASM8+ disconnects the station equipmentfrom the network without returning a tone to it (TIA/EIA 464 section5.4.10.2.5[1]). After the station equipment goes on-hook, the ASM8+ stationinterface is restored to on-hook (idle).You must ensure that the device, application, or interface card connected to anASM8+ station interface conform to these on-hook and off-hook conditions.