Octet string which indicates 'present' interfaces in card. Each '0' bit stands for non-present interface. Each '1' bit stands for present interface.

For ASMi54C card of LRS-102 and MP-4100 notPresent interfaces may be: - SHDSL Line ID with no wire pairs assigned to it (does not exist in ifTable) - PCS without SHDSL Line binded to it, (exist in ifTable, with ifOperStatus= notPresent) - External DS1 when its LIU is used by an Internal DS1 of the same card - Internal DS1 when single bearer is not TDM.

In each octet, MS bit represents port 1 and LS bit represents port 8

MSB LSB 1 0 0 0 1 0 0 0 -- Example: Port # 1 and 5 are present. Port 1 2 3 4 5 6 7 8

1st Octet (MSB octet) represents SDHSL Lines 2nd Octet represents PCS 3rd Octet represents External DS1 4th Octet represents Internal DS1 5th and 6th Octets are reserved for future Internal DS1.

For OP-108/106 cards of LRS-102 and MP-4100 notPresent interfaces may be: - External DS1 when its 'associated' Int-DS1 port is connected to another card - Internal DS1 when its 'associated' Ext-DS1 port is connected to another card (Both may be 'present' when inter-connected). 1st Octet represents External DS1 2nd Octet represents Internal DS1 Bit representation, same as for ASMi-54C card.