This field is used to identify which line types for different cards

For normal e1/t1 cards only t1 and e1 (uni mode) line types are supported.

For MALC t1Ima Uplink card, e1, t1, e1-ima, and t1-ima line types are supported

For MALC ds3 Uplink card, e3 and t3 line types are supported.

For MALC t1e1tdm Uplink card, only t1UniGr303, t1ImaGr303, e1UniV52 and e1ImaV52 are supported. MalcT1E1Tdm cards have 16 T1/E1 ports. The first 8 ports are ATM, the second 8 are TDM. These 4 values indicate both the layer 1 line type (e1Uni, e1Ima, t1Uni, t1Ima) for the ATM ports and the layer 3 signalling (gr303 and V5.2) for the TDM ports.

For malcXdsl48 with optional pots card, unknown, adsl-pots and adsl-pots-pv are allowed.

For malcPots48 with unknown, pots and pots-pv are allowed.

All other cards only support unknown.

Default value for MALC t1Ima uplink will be t1 line type if the line type was not stored in the Real Time Clock (RTC). Otherwise it will be the value stored in the RTC.

Default value for MALC ds3 Uplink will be t3 line type if the line type was not stored in the Real Time Clock (RTC). Otherwise it will be the value stored in the RTC.

Default for MalcT1E1Tdm is t1UniGr303.

This field is only set upon row-creation. Modifications to this value after row creation will only be allowed for packet voice capable cards.