Page 104 of 906 Option settings553-3001-211 Standard 3.00 August 2005NT1R20 Off-Premise Station cardTable 14 lists option settings for the NT1R20 Off-Premise Station analogcard.Table 14OPS analog line card configuration (Part 1 of 3)Application On-premise station (ONS) Off-premise station (OPS)Class of Service(CLS) (Note 1)ONP OPXLoop resistance(ohms)0–460 0–2300 (Note 2)Jumper strapsetting (Note 6)Both JX.0 and JX.1offBoth JX.0 and JX.1offBoth JX.0 and JX.1onNote 1: Configured in the Analog (500/2500-type) Telephone Administration program (LD 10).Note 2: The maximum signaling range supported by the OPS analog line card is 2300 ohms.Note 3: Loss of untreated (no gain devices) metallic line facility. Upper loss limits correspond toloop resistance ranges for 26 AWG wire.Note 4: Default software impedance settings are:ONP CLS OPX CLSTIMP: 600 ohms 600 ohmsBIMP: 600 ohms 3COM2Note: Gain treatment, such as a voice frequency repeater (VFR) is required to limit the actualOPS loop loss to 4.5 dB, maximum. VFR treatment of metallic loops having untreated lossgreater than 15 dB (equivalent to a maximum signaling range of 2300 ohms on 26 AWG wire) isnot recommended.Note: Jumper strap settings JX.0 and JX.1 apply to all eight units; “X” indicates the unitnumber, 0–7. “Off” indicates that a jumper strap is not installed across both pins on a jumperblock. Store unused straps on the OPS analog line card by installing them on a single jumperpin as shown below:553-5924Jumper blockJumper strapJumper pin
