IF Interface

To configure the ATPC (Automatic Transmit Power Control) function, set the ATPC attributes of the IF board. The ATPC function reduces the interference of a transmitter to adjacent systems and the residual bit error rate. In this user interface, you can query and set parameters for an intermediate frequency (IF) interface.

Navigation Path

In the NE Explorer, click a board and choose Configuration > IF Interface from the Function Tree.

Guideline

In the case of the IF boards that are configured with the 1+1 protection, set only the ATPC attributes of the main IF board.
The transmit power of the two ODUs that are in an XPIC working group should be the same if possible. Hence, each of the ATPC parameters should be set to the same value for the IF boards that are in an XPIC working group.
In the case of the Hybrid microwave, the AM switching is controlled through detection of the change in the ATPC information and returned microwave message.

NOTICE:

Setting the loopback status of the IF interface to inloop or outloop may interrupt the running service and ECC. Exercise caution before using the function.

Buttons

Button	Description
By Board/Port (Channel) By Function	Selects the attribute classification mode.

Button

Description

By Board/Port (Channel)

By Function

Selects the attribute classification mode.

Parameters

**Table 1** IF Attributes
Field	Value	Description
Port	NE name-slot number-board name-port number(port name)	Displays the position of a port.
IF Bandwidth Mode	FCC	Displays the IF bandwidth mode. FCC(Federal Communications Commission) indicates the bandwidth mode for North America.
Microwave Link ID	1 to 4094	Sets the microwave link ID. As the identifier of a microwave link, this parameter is used to avoid misconnection of microwave links between sites.
Received Microwave Link ID	1 to 4094	Queries the microwave link ID that is received. The signals that are received at an end is effective only when the link IDs are matched. When the received link ID does not match the expected link ID, an end inserts the AIS signal to the services in the downstream direction and reports a link ID mismatch alarm to the U2000 Web LCT.
IF Port Loopback	Non-Loopback, Inloop, Outloop Default: Non-Loopback	Sets the loopback status of an intermediate frequency interface on the equipment. Non-Loopback is usually selected. Non-Loopback refers to the normal status. It is not required to set loopback during normal equipment operation. Inloop means that the input signal returns from the intermediate frequency board of the destination NE along the original trail. Outloop means that the input signal passes through the ingress port and reaches the intermediate frequency board at the local NE and then is directly loopbacked to the service egress end. NOTICE: This function is usually used to locate faults for various IF interfaces. Performing loopback on an intermediate frequency interface is a diagnosis function which may affect services of related ports. Exercise caution before performing this function.
Consecutive Wave Status	Stop, Start	This parameter displays or specifies the status of transmitting the carrier signals from the IF interface. This parameter can be set to Start in the commissioning process only. In normal cases, this parameter is set to Stop. Otherwise, services are interrupted.
Capacity Usage of Ethernet Service(Mbit/s)	N/A	Displays the Ethernet service data capacity of the IFH2 board.
350 MHz Consecutive Wave Status	stop, start	Enables or disables the 350 MHz consecutive wave.
XPIC Enabled	Enabled, Disabled	Enables or disables the XPIC function.
Running Mode	IS2, IS3	Indicates the running mode of an ISU3 or ISV3 board. IS2: The running mode must be IS2 when the ISU3 or ISV3 board connects to an ISU2 or ISX2 board. IS3: The running mode must be IS3 when the ISU3 or ISV3 board uses a high modulation mode (512QAM, 1024QAM, QPSKStrong, 16QAMStrong, 512QAMLight, or 1024QAMLight).
Microwave Capacity Report Port	Null NE name-slot number-board name-port number(port name)	Sets Microwave Capacity Report Port. This port needs to be specified for an RTN NE that is connected to other NEs through GE ports. If this parameter is set to Null, the NE does not report IF bandwidths to adjacent NEs. If this parameter is set to a non-null value, the NE reports IF bandwidths to adjacent NEs through the specified port.
Enable IEEE-1588 Timeslot	Enabled, Disabled	Enables or disables the IEEE 1588 timeslot. Enable IEEE-1588 Timeslot needs to be set consistently between two ends of a microwave link.

**Table 2** Hybrid/AM Configuration
Field	Value	Description
Port	slot number-board name-port number(port name)	Displays the position of a port.
IF Channel Bandwidth	3.5MHz, 7MHz, 14MHz, 28MHz, 40MHz, 56MHz, FCC50MHz, 250MHz, 500MHz	Displays the channel spacing of the corresponding microwave link. NOTE: The value of channel space varies between different versions of the equipment. The value range of this parameter varies with the value of IF Service Type.
AM Boost Enable Status	Enable, Disable	The rated transmit power of ODUs is different in each modulation mode. When the modulation mode with higher bandwidth is used, the maximum transmit power is smaller. After the AM function is enabled, the transmit power reduces regularly as the bandwidth for the modulation mode increases. This reduces system gains and anti-fading compatibilities. After the AM boost function is enabled, the maximum transmit power of ODUs increases in modulation mode with high bandwidth and therefore the system gains increase. NOTE: The AM boost function can be enabled when the following conditions are met: The AM function is enabled. The IF channel bandwidth is 7, 14, 28, or 56 MHz. The guaranteed AM capacity is QPSK, 16QAM, or 32QAM. The full AM capacity is 64QAM, 128QAM, or 256QAM. The ATPC and AM boost functions are exclusive. If ATPC is enabled, the AM boost function is automatically disabled.
AM Status	Enable, Disable	Adaptive and coding modulation (AM). When you set this parameter to Enable, the microwave link uses the corresponding modulation scheme based on the channel conditions. When this parameter is set to Disable, the microwave link uses the specified modulation scheme only. In this case, you need to select Manual Modulation Mode.
AMAC Status	Enable, Disable	Adaptive and coding modulation (AMAC). When you set this parameter to Enable, the microwave link uses the corresponding modulation scheme based on the channel conditions. When this parameter is set to Disable, the microwave link uses the specified modulation scheme only. In this case, you need to select Manual Modulation Mode. The parameter only applies to RTN 380.
Modulation Mode of Guaranteed AM Capacity	QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, QPSKStrong, 16QAMStrong, 512QAMLight, 1024QAMLight,QPSKStrong_250M, QPSKStrong_500M	Specifies the lowest-order modulation scheme that the AM function supports. This parameter is set according to the network plan. Generally, the value of this parameter is determined by the service transmission bandwidth that the Hybrid radio must ensure and the availability of the microwave link that corresponds to this modulation scheme. This parameter is configurable only when AM Status is set to Enable. NOTE: This parameter can be set to 512QAM, 1024QAM, QPSKStrong, 16QAMStrong, 512QAMLight, or 1024QAMLight only when Running Mode of the board is IS3.
Guaranteed AMAC Capacity	QPSK, 16QAM, 32QAM, 64QAM,QPSKStrong_250M, QPSKStrong_500M	Specifies the lowest-order modulation scheme that the AMAC function supports. This parameter is set according to the network plan. Generally, the value of this parameter is determined by the service transmission bandwidth that the Hybrid radio must ensure and the availability of the microwave link that corresponds to this modulation scheme. This parameter is configurable only when AMAC Status is set to Enable. NOTE: The parameter only applies to RTN 380.
Modulation Mode of the Full AM Capacity	QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, QPSKStrong, 16QAMStrong, 512QAMLight, 1024QAMLight,QPSKStrong_250M, QPSKStrong_500M	Specifies the highest-order modulation scheme that the AM function supports. This parameter is set according to the network plan. Generally, the value of this parameter is determined by the bandwidth of the services that need to be transmitted over the Hybrid radio and the availability of the microwave link that corresponds to this modulation scheme. This parameter is configurable only when AM Status is set to Enable. NOTE: This parameter can be set to 512QAM, 1024QAM, QPSKStrong, 16QAMStrong, 512QAMLight, or 1024QAMLight only when Running Mode of the board is IS3.
Full AMAC Capacity	QPSK, 16QAM, 32QAM, 64QAM,QPSKStrong_250M, QPSKStrong_500M	Specifies the highest-order modulation scheme that the AMAC function supports. This parameter is set according to the network plan. Generally, the value of this parameter is determined by the bandwidth of the services that need to be transmitted over the Hybrid radio and the availability of the microwave link that corresponds to this modulation scheme. This parameter is configurable only when AMAC Status is set to Enable. NOTE: The parameter only applies to RTN 380.
Manual Modulation Mode	QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, QPSKStrong, 16QAMStrong, 512QAMLight, 1024QAMLight,QPSKStrong_250M, QPSKStrong_500M	specifies the modulation scheme that the microwave link uses for signal transmission. This parameter is configurable only when AM Status or AMAC Status is set to Disable. NOTE: This parameter can be set to 512QAM, 1024QAM, QPSKStrong, 16QAMStrong, 512QAMLight, or 1024QAMLight only when Running Mode of the board is IS3.
STM-1 Capacity	N/A	Indicates the STM-1 capacity. This parameter can be set only when IF Service Type is set to Hybrid(Native STM-1+ETH) or SDH.
Data Service Bandwidth (Mbit/s)	For example: 33.881	Displays the bandwidth of data service.
Tx Modulation Mode	QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, QPSKStrong, 16QAMStrong, 512QAMLight, 1024QAMLight,QPSKStrong_250M, QPSKStrong_500M	Displays the modulation mode of signals at the transmit end.
Rx Modulation Mode	QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, QPSKStrong, 16QAMStrong, 512QAMLight, 1024QAMLight,QPSKStrong_250M, QPSKStrong_500M	Displays the modulation mode of signals at the receive end.
Guaranteed AM Capacity (Mbit/s)	For example: 11	Displays the minimum AM service capacity of the link.
Full AM Service Capacity (Mbit/s)	For example: 11	Displays the maximum AM service capacity of the link.
Transmitted AM Service Capacity (Mbit/s)	For example: 11	Displays the transmitted AM service capacity of the link.
Received AM Service Capacity (Mbit/s)	For example: 0	Displays the received AM service capacity of the link.

**Table 3** ATPC Attributes
Field	Value	Description
Port	NE name-slot number-board name-port number (port name)	Displays the position of a port.
ATPC Enable Status	Enabled, Disabled	Enables or disables ATPC.
ATPC Upper Threshold (dBm)	-85.0 to -20.0	Sets the upper threshold of ATPC adjustment. When the level of the received signal exceeds the threshold, the transmitter automatically adjusts the transmit power. This parameter is configurable only when AATPC Enable Status is set to Enabled.
ATPC Lower Threshold (dBm)	-90.0 to -25.0	Sets the lower threshold of ATPC adjustment. When the level of the received signal is smaller than the threshold, the transmitter automatically adjusts the transmit power. This parameter is configurable only when AATPC Enable Status is set to Enabled.
ATPC Adjustment(dB)	1.0 to 5.0	The ATPC Adjustment(dB) parameter indicates the step for increasing or decreasing the transmitted power of the opposite ODU at a time when the ATPC function is enabled. This parameter is configurable only when AATPC Enable Status is set to Enabled.
ATPC Automatic Threshold Enable Status	Enabled, Disabled	Sets the ATPC automatic threshold enable status. The ATPC function enables the transmit power of a transmitter to automatically trace the change of the received signal level (RSL) at the receive end within the ATPC control range. When the function is enabled, the manually set ATPC upper and lower thresholds are invalid. The equipment automatically uses the preset ATP upper and lower thresholds based on the working mode of the IF board. When the function is disabled, the manually set ATPC upper and lower thresholds are used.
ATPC Automatic Threshold (dBm)	For example: 128QAM, -25.0, -40.0	Displays the ATPC automatic threshold.
ATPC Upper Automatic Threshold (dBm)	For example: /	Displays the ATPC upper automatic threshold.
ATPC Lower Automatic Threshold (dBm)	For example: /	Displays the ATPC lower automatic threshold.