Nortel Networks BCM1000 Benutzerhandbuch

Chapter 2 Telephony hardware

N0008587  01

The 4X16 provides both analog trunk connections and connections to digital telephones. The 
module is a combination of a CTM media bay module, with four analog lines, and a DSM 
16-digital telephone media bay module. Each of the four ports supports Caller ID and disconnect 
supervision. An auxiliary port beside Line 1 allows you to use an analog telephony device, such as 
a modem, fax or telephone, to share the trunk. 

 shows a diagram of the 4X16.

The 4X16 has one amphenol connector and five RJ11 connectors on the faceplate. For details on 
the 4X16 wiring, refer to 

.

Figure 20   Faceplate of 4X16 module LEDS, connectors, and jacks

The Business Communications Manager supports two types of analog station media bay modules. 
The system also allows you to attach analog devices to digital media bay modules by installing an 
analog terminal adaptor (ATA2) between the media bay module and the telephone. Finally, the 
FEM media bay module supports Norstar-based analog modules. All of these modules may have 
slightly different features or capabilities.

The table below provides a quick overview of the engineering information and feature function for 
each type of analog device supported by the system.

Table 6   Analog engineering specifications 

Ringing Frequency

(North America)

20 Hz ± 1Hz

20 Hz ± 1Hz

20 Hz ± 1Hz

20 Hz ± 1Hz

Ringing Frequency 

(Europe)

25 Hz ± 1Hz

25 Hz ± 1Hz

25 Hz ± 1Hz

20 Hz ± 1Hz

DSM16 amphenol 
connector

Power LED
Status LED
Line 1
Aux
Line 2
Line 3
Line 4