Division 331: Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment

Section Date Issue Size Title
331-000-0001980-09-012664.16 KBNumerical Index - Division 331 - Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment
331-000-000SW A1977-06-01C39.53 KBNumerical Index - Division 331 - Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment
331-001-0111978-07-011250.70 KBEquipment Test List - Division 331 - Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment
331-100-1001980-03-0121.29 MBMessage Circuit and C-Notched Noise - General Information
331-100-1011973-09-0121.12 MBImpulse Noise - General Information
331-200-1001974-04-012906.48 KBImpulse Noise - Requirements and Measurement
331-200-1051975-11-0111.75 MBImpulse Noise - Trunks - Test Procedures and Investigation
331-700-1001970-07-011805.06 KBCross-Office Noise - Testing Methods - General Description
331-700-1101970-08-011137.47 KBCross-Office Noise - Testing Methods - Selecting a Sample
331-700-1301970-07-011150.28 KBCross-Office Noise - Testing Methods - Test Equipment
331-700-5011970-07-011611.19 KBCross-Office Noise - Testing Methods - Step-by-Step
331-700-5021970-09-011634.24 KBCross-Office Noise - Testing Methods - Panel Offices
331-700-5031970-08-011573.02 KBCross-Office Noise - Testing Methods - No. 1 Crossbar Offices
331-700-5041970-09-011585.40 KBCross-Office Noise - Testing Methods - No. 5 Crossbar Offices
331-700-5051970-08-011580.93 KBCross-Office Noise - Testing Methods - No. 1 ESS Offices
331-701-5001974-06-011961.92 KBImpulse Noise - Central Office Test Procedures and Investigation
331-701-5011970-07-011973.73 KBBattery Supply Noise - Procedures For Making and Evaluating Noise Measurements on Central Office Battery Supplies
331-850-5011967-07-014523.44 KBNoise Measurements on Two-Wire Subscriber Loops - Methods and Requirements - At Stations
331-850-5021975-04-0114.32 MBMethods For Identifying and Correcting Inductive Noise Troubles on Subscriber Lines
331-850-5051975-01-016836.07 KBNoise Measurements on 2-Wire Subscriber Loops - Methods and Requirements - At No. 5 Crossbar Central Offices
331-850-5061975-01-014813.83 KBNoise Measurements on 2-Wire Subscriber Loops - Methods and Requirements - At SXS Central Offices