Port Analog Modem Sic - 3Com 3C13755-US - Router 5642 Installation Manual

30 C 2: I
HAPTER NTRODUCING
1 Port Analog Modem
SIC
R 5012 SIC
OUTER S
5 Check the status of the synchronous (LINK) LED on the faceplate of the 1-Port
Fractional T1 SIC. If the LED is off, the line is faulty. Check the line.
SIC-1AM integrates the functions of asynchronous interface and external Modem,
i.e. allowing 1 channel of remote Modem customers to directly access the Router.
Its main functions are:
Supporting the bit rate of 56kbps.
Detecting rings, off-hook, protect, and 2/4 wire convert and so on.
Accessing and processing the 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.
Figure 31 1 Port Analog Modem SIC
Table 25 1Port Modem Attributes
Attribute
Connector type
Number of connectors
2 (SIC-2AM)
Telephone cable with ferrite core.
56kbps
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.
Modem dial-up
Figure 32 1 Port Analog Modem Panel
Description
RJ11
1 (SIC-1AM)
Cable type
Maximum speed
Supported standard
Supported service