344 NT5D97 Dual-port DTI2 PRI2 cardTable 147Trunk interface impedance switch settingsDescription S8/S14 switch setting75 ohm OFF OFF ON OFF120 ohm OFF OFF OFF ONRing ground switches for NT5D97AA/ABA set of four Dip switches (S2) selects which Ring lines are connected toground. Refer to Table 148 "Ring ground switch settings" (page 344).Table 148Ring ground switch settingsSwitch Description S2 switch settingS1 Trunk 0 Transit OFF-Ring line is not groundedON- Ring line is grounded2 Trunk 0 Receive OFF-Ring line is not groundedON- Ring line is grounded3 Trunk 1 Transmit OFF-Ring line is not groundedON- Ring line is grounded4 Trunk 1 Receive OFF-Ring line is not groundedON- Ring line is groundedDCH Address select switch for NTBK51AA daughterboard forNT5D97AA/ABIn case of an on-board NTBK51AA D-channel daughterboard, set of fourswitches (S3) provide the daughterboard address. Refer to Table 156 "Trunk1 switches" (page 349).Note: Switch 8 of S3 (S3-8) does not require a switch setting to selectbetween the on-board NTBK51AA D-channel daughterboard andan external DCHI/MSDL. The NT5D97 detects when the on-boardNTBK51AA D-channel daughterboard is used.Table 149DCH mode and address switch settingsSwitchDescription S3 switch setting1-4 D-channel daughterboard address See Table 150"NTBK51AAdaughterboardaddress select switchsettings" (page 345)5-8 For future use OFFNortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
