System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Interfaces
Page 3-6 Proprietary Information Aastra
Optical STM-1/4 interfaces
The optical interfaces are made available by the SIFU (SDH Interface Unit)
via SFP modules. Up to two such SIFUs can be mounted on one SCU
module. A mixed equipment with both STM-1 and STM-4 modules and with
optical and electrical modules is possible.
Connection is implemented using LC-type plug connectors.
The following SIFU modules are available for Release 5.1:
Tab. 3.A: Optical STM-1/4 interfaces
STM-1
STM-1 S1.1 SH 1300 05HAM00088AAW
STM-1 L1.1 LH 1300 05HAM00089AAY
STM-1 L1.2 LH 1550 05HAM00090AAU
STM-4
STM-4 S4.1 SH 1300 05HAM00091AAW
STM-4 L4.1 LH 1300 05HAM00092AAY
STM-4 L4.2 LH 1550 05HAM00093AAB
Application class syntax (acc. to ITU-T G.957):
The application class is described using the following syntax:
Application - STM level -
Wavelength range
L1.1
Application:
S: Short-haul,
distance up to about 15 km
L: Long-haul,
distance up to about 40 km with 1300 nm,
distance up to about 80 km with 1500 nm
STM level:
1: STM-1
4: STM-4
Wavelength range:
.1: Wavelength range: 1300 nm
.2: Wavelength range: 1500 nm
The lasers used for the optical interfaces meet Laser Class 1
conditions both in operation and in case of a fault. The lasers are
maintenance-free.