Basic Layout of Huawei OLT

Today i will discuss about Basic Layout of Huawei OLT. Bellow are the details….

Basic Layout:

Chassis: bundled sales, not sold separately.

MPU: generally double master, one for main and one for standby, SCUN, MCUD (MA5608T) are common used.

Power Plate: generally dual power, one for main and one for standby, PRTE (DC), MPWC (DC), MPWD (AC) are common used.

Upstream board: GICF, GICG, X2CS etc.

GPON service boards: GPBD, GPFD etc.

Software: generally has been installed inside the control board SCUN

Control board – SCUN (SCUL, SCUK, SCUH)

Function:

Systematic control, switching and unified network management
Simple routing protocol functions realization

External Interface:

CON (RS-232 the serial port maintenance)
ETH (10/100M Base-T the Ethernet port maintenance)
ESC environmental monitoring port
4 GE uplink optical interfaces

Frequently configure two, one for main and one for standby, OLT software is installed in the main control board

GPON service board -GPBC/GPBD/GPFD

Main functions:

Huawei GPON (Gigabit Passive Optical Network) access panel and terminal ONU (Optical Network Unit) devices together to achieve the OLT function on GPON system, default with B + SFP module (free), to replace the need to purchase C +

Differences of GPON board:

Type	Port number	Optical module	Maximum splitting ratio	Traffic shaping
1G-GPON	4	SFF(Class B+)	1:64	No
1G-GPON	8	SFP(Class B+ and Class C+)	1:128	No
1G-GPON	8	SFP(Class B+ and Class C+)	1:128	Yes
1G-GPON	16	SFP(Class B+ and Class C+)	1:128	Yes
1G-GPON	8	SFP(Class B+ and Class C+)	1:128	Yes
10G-GPON	4	XFP	1:128	Yes

Difference between GPON intermediate B + and C + optical modules

Both of the B + and C + are supported 1:128 spectroscopic, mainly affecting transmission distance
The higher splitting ratio is, the greater of the loss, and the shorter of the transmission distance

Difference between GPON intermediate B + and C + optical modules

Power board

MA5680T, MA5683T, MA5600T, MA5603T power only supports DC (If you only AC input, you need to buy an inverter to convert AC-48V into DC.)
MA5608T, divided into two kinds, AC and DC.

Software

The charges is based on each GPON port, from R (n) to R (n +1)
Software issues related to compatibility between Huawei OLT and Huawei ONT, with some compatibility version is better, and some relatively poor.