Document Title Security Level
1 Available configuration
DU
CONFIGURACI
# Sitio A Sitio B SERVICIO
ON
S
301 CHO.Trigana ANT.Necocli ACCESO 1+1 SD
302 CHO.Salaqui CHO.Riosucio ACCESO 1+1 HSB
GUJ.Cabo De RPT.GUJ.Poro
412 ACCESO 1+1 HSB
La Vela po
SUC.EL
539 SUC.VARSOVIA ACCESO 1+1 HSB
PALMITO
600
BOY.Nobsa BOY.Iza TRONCAL 1+1 XPIC
(15B)
602
CUN.Nimaima CUN.Infierno TRONCAL 1+1 XPIC
(17B)
760 RPT.GUJ.Poro RPT.GUJ.Cerr
TRONCAL 3+1 SD XPIC
(175B) po o la Teta
787 GUJ. Cerrro
GUJ. Siapana TRONCAL 1+1 SD
(202B) de la Teta
798 ANT.Santa ANT.Naranjit
TRONCAL 1+1 XPIC
(213B) Catalina as
In this way, for the 1 + 1 HSB XPIC and 3 + 1 SD XPIC trunks, physical
redundancy is fulfilled and the ISM8 must be connected at each end to
protect a complete system:
2020-12-20 Huawei Confidential Page 1 of 5
Document Title Security Level
For the access links (1 + 1 HSB and 1 + 1 SD), we propose to place an
additional ISV3 board:
2 Recommended configuration
ISM8+ISM8 ——> ISV3+ISV3
3 Considerations
For IS3/IS6 work mode, the capacity was same, but lower than IS8 mode,
example:
15G/ISM8 Board/IS3 or IS6 mode/BW=28Mhz/128QAM, capacity=161Mbps
2020-12-20 Huawei Confidential Page 2 of 5
Document Title Security Level
15G/ISM8 Board/IS8 mode/BW=28Mhz/128QAM, capacity=172Mbps
4 Creating an IF 1+1 Protection Group
If the radio link requires 1+1 HSB/FD/SD protection, create the IF 1+1
protection group. To configure an IF 1+1 protection group on two cascaded RTN
950, you need to configure an IF 1+1 protection group on each RTN 950.
Prerequisites
You must be an NM user with NE operator authority or higher.
The IF boards and the ODUs to which the IF boards are connected have
been added on the NE Panel.
The IF boards of an IF 1+1 FD/SD protection group have been configured
in two paired slots.
The two RTN 950 s are connected using a service cascade cable.
Tools, Equipment, and Materials
U2000
Procedure
Step 1 Select the NE from the Object Tree in the NE Explorer. Choose Configuration > IF 1+1
2020-12-20 Huawei Confidential Page 3 of 5
Document Title Security Level
Protection from the Function Tree.
NOTE
If you create an IF 1+1 protection group using the Web LCT, perform the following
operations:
Select the NE from the Object Tree in the NE Explorer. Choose Configuration > Link
Configuration from the Function Tree. Click the IF 1+1 Protection tab.
Step 2 Click Create.
The Create IF 1+1 Protection dialog box is displayed.
Step 3 Configure the parameters of the IF 1+1 protection group.
2020-12-20 Huawei Confidential Page 4 of 5
Document Title Security Level
NOTE
l When Working Mode is set to HSB, the equipment provides a 1+1 hot standby
configuration for the IF board and ODU at both ends of each hop of a radio link to
realize the protection.
l When Working Mode is set to FD, the system uses two channels that have a frequency
spacing between them, to transmit and receive the same signal. The remote end
selects signals from the two received signals. With FD protection, the impact of the
fading on signal transmission is reduced.
l When Working Mode is set to SD, the system uses two antennas that have a space
distance between them, to receive the same signal. The equipment selects signals
from the two received signals. With SD protection, the impact of the fading on
signal transmission is reduced.
l When Revertive Mode is set to Revertive Mode, the NE that is in the switching
state releases the switching and enables the former working channel to return to the
normal state some time after the former working channel is restored to normal. It is
recommended that you set this parameter to Revertive Mode.
l When Revertive Mode is set to Non-Revertive, the NE that is in the switching state
keeps the current state unchanged unless another switching occurs even though the
former working channel is restored to normal.
You can set WTR Time(s) only when Revertive Mode is set to Revertive Mode. It is
recommended that you use the default value.
Enable Reverse Switching is valid only when Working Mode is set to HSB or SD.
Generally, it is recommended that you set Enable Reverse Switching to Enabled.
Each of the parameters Working Mode, Revertive Mode, WTR Time(s),Anti-jitter
Time(s), and
Enable Reverse Switching must be set to the same value at both ends of a radio hop.
It is recommended that you set Alarm Report Mode to Only protection group alarms. In
this case, protection group alarms are reported to indicate radio link faults.
It is recommended that Anti-jitter Time(s) take its default value.
Step 4 Click OK. Close the displayed operation result dialog box.
----End
2020-12-20 Huawei Confidential Page 5 of 5
