This variable represents the loopback confi- guration of the DS1 interface. Agents support- ing read/write access should return badValue in response to a requested loopback state that the interface does not support. The values mean: PayloadLoop The received signal at this interf is looped through the device. Typically the received signal is looped back for re- transmission after it has passed through the device's framing function. LineLoop The received signal at this interface does not go through the device (minimum pene- tration) but is looped back out. LocalLoopbk This variable indicates whether the local loopback is enabled or disabled on the port or line by the device. DPLoop This variable indicates whether the ncmData Port loopback is enabled or disabled by the device. Remark: Only ACE-T1/ACE-E1 cards use this loopbk type for port# 3 & 4; while the QUAD-T1/ QUAD-E1 don't support this loopback type. Act-LLBBOP This variable indicates to activate the LLBBOP. Act-PLBBOP This variable indicates to activate the PLBBOP. Deact-LLBBOP This variable indicates to deactivate the LLBBOP. Deact-PLBBOP This variable indicates to deactivate the PLBBOP. Deact-SIX-TWO-FOUR-ONE-ONE-INBAND This variable indicates to deactivate 62411 Inband Deact-FT1-LOOP-CODE This variable indicates to deactivate FT1 Loop Code When one of this object is chosen and received by the agent, this loopback type is send to the target platform to activate the loopback action; while the object value = 0 is received the loopback action will be deactivated by the loopback type stored inside the port status.