Chapter 3 System Features
STM-1 Multi-Mode and Single-Mode Modules
3-70
255-700-025
PacketStar
™
Access Concentrator 60 User Guide
, Issue 1
Release 6.3.0
•
Interim Inter-Switch Signaling Protocol, af-pnni-0026.000
•
Private Network-Network Interface (PNNI), af-pnni-0055.000
Protocols:
•
Traffic management:
~
AQueMan™
algorithm (for traffic flow control)
~
AAL-5 (traffic shaping)
~
10 quality of service (Qos) levels:
•
Constant bit rate level 1 (CBR-1), CBR-2, CBR-3, and CBR-4
•
Variable bit rate (VBR): VBR real time level 1 (VBR-RT1), VBR real
time level 2 (VBR-RT2), VBR non-real time level 1 (VBR-NRT1),
VBR non-real time level 2 (VBR-NRT2), VBR-express
•
Unspecified bit rate (UBR)
Hardware Features
All STM-1 Multi-Mode and Single-Mode modules have the following
hardware features:
Table 3-8. ST M-1 Multi-Mode and Single-Mode Hardware Specifications
Feature
Module
STM-1 SM
STM-1 MM
Number of ports
1
1
Type of connector (two for
each module — transmit
and receive)
SC
ST
Type of fiber-optic cable
single-mode
multi-mode
Fiber-optic cable reach
(approximate, depending
on fiber makeup)
25.7 km
(16 miles)
2 km
(6,560 feet or 1.2
miles)
Line rate
155 Mbps
155 Mbps
Optical wavelength
(nominal value)
1,300 nm
1,330 nm
• System gain
15 dB
13.5 dB
• Transmitter — mini-
mum optical output
power (average)
-15 dBm
-19 dBm
• Transmitter — maxi-
mum optical output
power (average)
-8 dBm
-14 dBm