Installation guide

Making External Connections to Cisco 4000 Series Routers 4-91
Network Connection Considerations
The ATM modules provide an interface to ATM switching fabrics for transmitting and
receiving data at rates of up to 155 Mbps in each direction (RX and TX); the actual rate is
determined by the physical layer interface module (PLIM) and ATM network technology
(by the specific physical layer). Four ATM network processor modules are available that
support PLIMs connecting to the following physical layers:
• Synchronous Optical Network (SONET)/Synchronous Digital Hierarchy (SDH)
155-Mbps single-mode fiber-optical—Synchronous Transport Signal level 3,
concatenated (STS-3c) or Synchronous Transport Module, level 1 (STM-1) (See
Figure 4-49)
Figure 4-49 ATM Network Processor Module with STS-3c/STM-1 Single Mode
PLIM
• SONET/SDH 155-Mbps multimode fiber-optical—STS-3c or STM-1 (See Figure 4-50)
• E3 34-Mbps coaxial cable (See Figure 4-51)
• Digital signal (DS)-3 45-Mbps coaxial cable (See Figure 4-51)
H3157
Alignment
groove
Alignment
groove
ATM
SM
XMTR RCVR
RX ALARM
AVOID EXPOSURE–INVISIBLE
LASER RADIATION IS EMITTED
FROM THESE APERTURES.
WARNING
CISCO SYSTEMS, INC.
170 W. TASMAN DRIVE
SAN JOSE CA. 95134
DATE:
“Complies with FDA Radiation
Performance Standards, 21 CFR,
Subchapter J”
1300 NM
CLASS 1 LASER PRODUCT
LASERKLASSE 1
READY
RX CELLSBUSY
D
DI
nnector