ADTRAN Quad T1 IMA

Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice

5-22 61179641AL1-5C

Service This field identifies ATM Traffic Class. There are four service

options (Traffic Descriptors) available for the Total Access 1248

system:

•UBR

•CBR

•VBR-rt

•VBR-nrt

The options available for each service and their descriptions are

shown in Table 5-8.

Circuit ID This field displays the identifier given to a specific circuit. This

is a user defined value.

Pkt Discard This field displays the status of packet discard : Enabled or

Disabled.

Table 5-8. PVC/PVP Service Options

Service Description T1 Settings E1 Settings

UBR Unspecified bit rate

CBR

•PCR

Constant bit rate

• Peak Cell Rate 0-14488 0-19316

VBR-rt

•PCR

•SCR

•MBS

Variable bit rate real time

• Peak Cell Rate

• Sustained Cell Rate

•Maximum Burst Size

0-14488

0-65535

0-19316

0-65535

VBR-nrt

•PCR

•SCR

•MBS

Variable bit rate non-real time

• Peak Cell Rate

• Sustained Cell Rate

•Maximum Burst Size

0-14488

0-65535

0-19316

0-65535

Table 5-7. Create a New PVC/PVP Screen Fields (Continued)

Field Description