ATM Policy

In this user interface, you can select the ATM policy for creating services.

Navigation Path

In the NE Explorer, select an NE and choose Configuration > ATM Service Management from the Function Tree. Click New. In the dialog box displayed, click the Connection tab, and click Add. In another dialog box displayed, click the corresponding button for the Uplink Policy or Downlink Policy parameter.

Parameters

**Table 1** Descriptions of the parameters for ATM Policy
Field	Value	Description
Policy ID	Example: 5	Displays the ID of the policy.
Policy Name	64 bytes	Displays the name of the policy.
Service Type	UBR, CBR, RT-VBR, NRT-VBR, UBR+	Displays the service type. UBR indicates the ATM service of an unspecified bit rate. With support for the non-real-time application, the UBR service has no guaranteed service quality and thus is applicable to transmitting IP data packets. CBR indicates the ATM service of a constant bit rate. CBR is used for the connection that requires a static bandwidth. The CBR service is applicable to the real-time services that have high requirements of delay change, such as the audio, video and circuit emulation services. RT-VBR indicates the ATM service of the real-time variable bit rate. As a real-time application, the RT-VBR requires strictly limited delay. The RT-VBR service is applicable to audio and video services. NRT-VBR indicates the ATM service of the non-real-time variable bit rate. As a non-real-time application for burst traffic, the NRT-VBR service ensures a low cell loss ratio without limiting the delay. The UBR+ service supports the setting of the MCR parameter. There are UBR+ services on many NodeBs. The UBR+ services are configured with the MCR. When the service rate does not exceed the configured MCR, the normal service transmission is ensured. The features of the UBR+ service other than the MCR are the same as the features of the UBR service.
Traffic Type	NoTrafficDescriptor, NoClpNoScr, NoClpTaggingNoScr, NoClpNoScrCdvt	The four traffic types are stipulated in RFC 2514. NoTrafficDescriptor: The flow control is absent. This traffic type is mainly applicable to services of the BE. NoClpNoScr: The clp0 and clp1 cells are processed as the same. NoClpTaggingNoScr: The clp0 and clp1 cells are processed differently. NoClpNoScrCdvt: The clp0 and clp1 cells are processed as the same.
PCR-CLP01	90 to 1412828	Display the traffic descriptor, that is, PCR-CLP01. PCR-CLP01 indicates the maximum transmission rate of cells.
SCR-CLP01	90 to 1412828	Display the traffic descriptor, that is, SCR-CLP01. SCR-CLP01 indicates the average transmission rate of cells during a long time.
PCR-CLP0	90 to 1412828	Display the traffic descriptor, that is, PCR-CLP0.
SCR-CLP0	90 to 1412828	Display the traffic descriptor, that is, SCR-CLP0.
Clp01Mcr (cell/s)	566 to 32664	Display the traffic descriptor, that is, Clp01Mcr.
MBS(cell)	2 to 200000	Display the maximum size of burst cells. This parameter indicates the maximum length that the ATM cells can reach.
CDVT(us)	0.7 to 1310000.0	Display the cell delay variation tolerance. This parameter indicates the maximum delay of the ATM cells.
Traffic Frame Discarding Flag	No, Yes	Enable or disable the flag for discarding the traffic frame.
UPC/NPC	Disabled, Enabled	Enable or disable UPC/NPC. UPC indicates the usage parameter control and NPC indicates the network parameter control. After UPC/NPC is enabled, the cells with flags are discarded in the case of network congestion.