dsx3Ds1ForRemoteLoop 1.3.6.1.2.1.10.30.5.1.18

Indicates which DS1/E1 on this DS3/E3 will be indicated in the remote ds1 loopback request. A value of 0 means no DS1 will be looped. A value of 29 means all DS1s/E1s will be looped.