3Com MSR 30, MSR 20, MSR 50 manual SIC-1AM/SIC-2AM, Interface LEDs SIC-1AM panel

36CHAPTER 2: SMART INTERFACE CARDS

Step 2: Connect the other end of the T1 cable to the relevant equipment;

Step 3: Check the status of LINK LED on the SIC-1TPRI/SIC-1T1-F panel: ON means the link is connected and OFF means the link is not connected. In the latter case, check the line.

SIC-1AM/SIC-2AM

Introduction 1/2-port analog modem interface card (SIC-1AM/SIC-2AM) integrates the functions of asynchronous interface and external modem, that is, allowing 1/2 channel(s) of remote modem subscribers to directly access the Router. They support:

■Data rate of 56 kbps.

■Accessing and handling analog signals and transmitting the processed data to the Router host through the serial interface bus. And also, processing the data received from the host and then transmitting them to the PSTN via the telephone port.

Interface Attributes The interface attributes of SIC-1AM/SIC-2AM are given in the following table:

Table 10 Interface attributes of SIC-1AM/SIC-2AM

Attribute	Description
Connector type	RJ11
Number of connectors	1 (SIC-1AM)
	2 (SIC-2AM)
Cable type	Telephone cable with ferrite core
Maximum speed	56 kbps
Supported standard	ITU-T V.90, V.34 (33.6 kbps), V.FC,
	V.32 bis, V.32, V.22 bis, V.22A/B,
	V.23, V.21, Bell 212A a, Bell 103.
Supported service	Modem dial-up

Interface LEDs Figure 28 SIC-1AM panel

Figure 29 SIC-2AM panel