Nortel Networks 1000 - Manual (Page 82)

82 Option settings
Table 13
OPS analog line card configuration (cont’d.)
Application On-premise station (ONS) Off-premise station (OPS)
Class of Service
(CLS) (Note 1)
ONP OPX
Loop loss (dB)
(Note 3)
0–1.5 >1.5–2.5 >2.5–3.0 0–1.5 >1.5–2.5 >2.5–4.5 >4.5–15
TIMP
(Notes 1, 4) 600
ohms
600
ohms
600
ohms
600
ohms
600
ohms
600
ohms
600
ohms
Class of Service
(CLS) (Note 1)
ONP OPX
BIMP
(Notes 1, 4) 600
ohms
3COM1 3COM2
600
ohms
3COM1 3COM2 3COM2
Gain treatment
(Note 5)
No Yes
Note 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 to
loop resistance ranges for 26 AWG wire.
Note 4: Default software impedance settings are:
TIMP:
BIMP:
ONP CLS
600 ohms
600 ohms OPX CLS
600 ohms
3COM2
Note 1: Gain treatment, such as a voice frequency repeater (VFR) is required to limit the actual OPS
loop loss to 4.5 dB, maximum. VFR treatment of metallic loops having untreated loss greater than 15
dB (equivalent to a maximum signaling range of 2300 ohms on 26 AWG wire) is not recommended.
Note 2: Jumper strap settings JX.0 and JX.1 apply to all eight units; "X" indicates the unit number,
0–7. "Off" indicates that a jumper strap is not installed across both pins on a jumper block. Store
unused straps on the OPS analog line card by installing them on a single jumper pin as shown below:
NT5D12 Dual DTI/PRI (DDP) card
Switch setting tables for this card are listed in subsections according to
their function. Bold font designates factory (default) settings.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.