CS-03 Part I — Requirements for Terminal Equipment (TE) and Related Access Arrangements Intended for Direct Connection to Analog Wireline Facilities

Issue 9, Amendment 5
Posted on March 3, 2016

Contents

1. Introduction

1.1 Scope

This part sets forth the minimum technical requirements for terminal equipment (TE) and related access arrangements intended for direct connection to analog wireline facilities owned by Canadian local exchange carriers (LEC). These technical requirements are intended to protect LEC facilities and personnel from harm. Compliance with these requirements will not, however, ensure compatibility with wireline transmission services.

The technical requirements in this part apply to:

  1. TE intended for direct connection:
    • to the public switched telephone network (PSTN), for use in conjunction with all analog services other than party line services;
    • to channels furnished in connection with foreign exchange lines; and
    • to private line services for tie trunk interfaces and off-premises station lines;
  2. splitters and in-line filters connected to lines furnished with DSL equipment;
  3. secondary telecommunications protector devices (such as protectors or filters installed in power bars) intended for connection between the PSTN interface and TE; and
  4. component devices intended for connection between the network interface and TE (e.g. stuttered dial tone detectors), for connection between telephone terminal handsets and terminal base units (e.g. receiver amplifiers), for replacement of handsets or connection to handsets themselves.

1.2 Technical Requirements

1.2.1 Technical Requirements Table

Table 1.2.2 provides a cross-reference between most TE interfaces and the requirements with which they shall comply. These are marked with a single asterisk (*).

An identified requirement shall not apply to equipment that is not capable of providing the function for which the requirement applies.

1.2.2 Technical Requirements for Component Devices

The technical requirements for station equipment component devices intended for direct connection to host equipment are provided in Table 1.2.2. The testing configuration is presented in Section 1.5.6.4.

The technical requirements for component devices intended for connection to registered handset telephones are provided in Table 1.2.2. The testing configuration is presented in Section 1.5.6.5.

Table 1.2.2 — Technical Requirements for TE and Protective Circuitry to Be Connected to Analog Interfaces
Requirements LS GS RB TTA TTB OPS LADC
2. Electrical and Mechanical Stresses
2.1 Mechanical Shock * * * * * * *
2.2 Dielectric Strength * * * * * * *
2.3 Hazardous Voltage Limitations
2.3.1 Requirements * * * * * * *
2.3.2 Type I E&M Leads * *
2.3.3 Type II E&M Leads * *
2.3.4 Off-premises Station & DID Interface Voltages * *
2.3.5 Local Area Data Channel Interfaces *
2.3.6 Ringdown Voice Band Private Line and Voice Band Metallic Channel Interface * * * * * * *
2.3.7 Connection of Non-registered Equipment to Registered TE or Registered Protective Circuitry * * * * * * *
2.3.8 Non-hazardous Voltage Source * * * * * * *
2.3.9 Ringing Source Limitations * *
2.3.10 Hazards Due to Intentional Paths to Ground * * * * * * *
2.4 Surge Voltage
2.4.1 Telephone Line Surge — Type A * * * * * * *
2.4.2 Telephone Line Surge — Type B * * * * * * *
2.5 Power Line Surge
2.5.1 Requirements * * * * * * *
3. Network Protection Requirements
3.1 General * * * * * * *
3.2 For future use
3.3 Extraneous AC Energy
3.3.1 Metallic AC Energy * * * * * * *
3.3.2 Longitudinal AC Signals * * * * * * *
3.4 Transmitted Signal Power
3.4.1 In-band Transmitted Signal Power — Metallic * * * * * * *
3.4.2 Limitations on Internal Signal Sources Primarily Intended for Network Control Signalling Contained in Voice and Data Equipment * * * * *
3.4.3 Requirements for Data Circuit TE * * * * * *
3.4.4 Through Transmission * * * * * * *
3.4.5 DC Conditions to Off-premises Stations (OPS) Lines *
3.4.6 Out-of-band Transmitted Signal Power — Metallic * * * * * * *
3.4.7 For Future Use
3.4.8 Audio Signal Limiting * * * * * *
3.4.9 Method Used to Generate Audio Signals
3.5 Billing Protection
3.5.1 Call Duration * *
3.5.2 Voice and Data Equipment * *
3.5.3 Signalling Interference * * * * * *
3.5.4 Answer Supervision *
3.6 Transverse Balance * * * * * * *
3.7 On-hook Terminal Resistance and Impedance
3.7.1 Metallic and Longitudinal DC Resistance (Loop-start Interface) *
3.7.2 DC Current During Ringing (Loop-start and Ground-start Interfaces) * *
3.7.3 Metallic and Longitudinal Impedance during Ringing (Loop-start and Ground-start Interfaces) * *
3.7.4 OPS Interface for PBX with DID  — Ring Trip Requirements *
3.8 Idle State Terminal Impedance — Return Loss and Transducer Loss (Tie Trunk Interface) * *
3.9 Automatic Dialling and Automatic Redialling * * * * * *
3.10 Stuttered Dial Tone Detection *
3.11 Manual Programming of Memory Dialling Numbers * *

Acronyms

  • LS — Loop‑start
  • GS — Ground‑start
  • RB — Reverse Battery
  • TTA — Tie Trunk Type A
  • TTB — Tie Trunk Type B
  • OPS — Off-premises Station
  • LADC — Local Area Data Channel

1.3 Sequence of Equipment Testing

The tests for single or multiple line equipment shall be performed in the following order:

Section 1.7
Section 2.3
Hazardous Voltage Limitations (excluding 2.3.10.1)
Section 2.1
Section 1.7
Section 2.3
Hazardous Voltage Limitations (excluding 2.3.10.1)
Section 2.5
Section 1.7

Notes:

  1. Section 2.2 provides the requirements for:
    1. environmental conditioning electrical stress prior to the tests specified in Section 3; and
    2. hazardous voltage isolation.
  2. The steady state voltage stress tests specified in Section 2.2 shall be performed prior to the surge voltage requirements of Section 2.4.

1.4 Operating States

Unless specifically exempt, TE that is not intended to initiate outgoing calls and/or answer incoming calls is considered to be permanently on-hook and shall meet all on-hook requirements in the respective requirements sections.

Devices with two operating states (e.g. those that have both off-hook and on-hook states) shall comply with the requirements for each of those states. In accordance with the manufacturer's manual, or as otherwise stated, the applicant shall provide a description of the operating functions that the device is capable of performing in each of the off-hook and on-hook operating states and the method by which the device is put into each of these states. The device shall not automatically change from an on-hook state to an off-hook state except in response to an incoming call, initiating an outgoing call, or as specified in sections 3.10 and 3.11.

If feature options are provided, they shall be tested in situations where they may affect the compliance of parameter values with respect to the requirements of this specification.


1.5 Testing Configuration

1.5.1 Multi-port TE

  1. Multi-port TE configured for testing shall include all equipment components necessary to provide the functions described in the manufacturer's manual and which may affect compliance with this specification.
  2. The multi-port TE shall include:
    1. at least one of each type of trunk interface.
    2. a minimum of one alerting device or alerting detection circuit across each trunk interface with incoming call capability;
    3. at least one of each type of station interface. The total number of station interfaces shall be equal to or exceed the total number of trunk interface types submitted for testing; and
    4. at least one of each type of station apparatus, including the attendant position intended to be part of the system or a unit of registered station apparatus, to be used for testing purposes to demonstrate compliance of the private branch exchange (PBX) with the requirements of this specification.
  3. Each trunk interface and station interface submitted for testing shall be terminated in a simulator circuit, a test circuit or a station apparatus, as deemed appropriate. (See Section 4.)
  4. The multi-port TE shall allow any trunk interface to be connected to any attendant's position and station interface that should be accommodated or connected.
  5. The multi-port TE shall be tested with a power supply that is suitable for powering the system, as recommended by the manufacturer.

1.5.2 Analog Network Interfaces With Through Transmission From Digital Network Interfaces

  1. TE equipped with analog interfaces with through transmission from digital interfaces shall be configured in a loop-back connection, as shown in Figure 1.5.2.
  2. Determine, as per the manufacturer's manual, the permissible voltage level that may be applied to receive 1.544 Mbps (DS-1) digital interface when connected to a transmit interface in a loop-back configuration. Install a suitable resistance pad or other device which may be used to obtain the required input voltage level (e.g. to reduce a 6 V output to match a 3 V input).
  3. On each TE unit, select a 1.544 Mbps (DS-1) digital interface which has through path connection to an analog network interface. Connect the digital interfaces as shown in Figure 1.5.2, with the correct voltage level, if equipped, as specified in (2).

Figure 1.5.2 — Loop-Back Digital Channel Interface

Figure 1.5.2 — Loop-Back Digital Channel Interface (the long description is located below the image)
Description

This image shows the test set-up for a loop-back of a digital channel interface. The transmit pair of the terminal equipment is connected through resistance pads to the receive pair of a second digital interface. The receive pair of the terminal equipment is connected through resistance pads to the transmit pair of the second digital interface. The resistance pads may be required to adjust voltage levels to correct values at the receive interfaces. The analog network interface of the terminal equipment is terminated by a 600 Ω +/−1%, 5 watt resistor.

1.5.3 Accessory Equipment in TE Packages

Accessory equipment may be included as part of a TE package. It shall be connected to the TE for testing, in accordance with the manufacturer's manual. Such TE packages shall be tested in all operating states for compliance with all applicable requirements of this specification.

1.5.4 Cordless Telephones

The following testing considerations shall apply when testing cordless telephones to determine compliance with this specification:

  1. Prior to commencing tests for compliance with Compliance Specification CS-03 requirements, the handset battery shall be fully charged, in accordance with the manufacturer's instructions.
  2. The test location shall be selected to minimize any effect on the test results from known sources of electromagnetic interference.
  3. If applicable, base and handset antennae shall be vertically oriented. In cases where the base unit power cord is used as an antenna, only the power cord supplied with the unit shall be used for testing purposes.

1.5.5 Devices Connected in Series with Tip and Ring

Devices connected in series with tip and ring shall be tested as "stand-alone" devices to determine compliance with the requirements of this specification.

1.5.6 Component Devices

1.5.6.1 General

This specification provides for a wide range of component devices intended for connection to either:

  1. host equipment, either directly or via metallic channel, or other types of point-to-point facilities; or
  2. registered handset telephones.
1.5.6.2 Power Supplies for Component Devices

Component devices shall be tested with a power supply recommended by the manufacturer as being suitable for supplying power to the device.

1.5.6.3 Accessory Equipment

Accessory equipment may be included as part of a component devices package. The accessory equipment shall be connected to component devices for testing purposes, in accordance with the manufacturer's manual. Such component device packages shall be tested in all operating states for compliance with all applicable requirements of this specification.

1.5.6.4 Station Equipment Component Devices

Component devices intended for connection to an equipment interface shall be assembled together with the host equipment simulator and this assembly shall be tested as TE, using the requirements specified in Table 1.2.2.

The following additional requirements shall be satisfied:

  1. The intended host equipment shall be a currently registered type and shall be clearly identified in the test report.
  2. An attestation and analysis shall be provided to demonstrate that the host equipment simulator reproduces the identical test results that would be obtained with the host equipment.
1.5.6.5 Component Devices Intended for Connection to Registered Handset Telephones

Component devices intended for connection to registered handset telephones shall be tested using a single telephone as a test bed. The telephone selected as the test bed shall meet the following requirements:

  1. The telephone shall be representative of the telephones with which the component device is intended to be used.
  2. The telephone shall consist of a handset connected via a cord with modular connectors to the base unit of the telephone.
  3. The telephone shall be a currently registered device and shall be clearly identified in the test report.
  4. The component device shall be fully operational when used with the telephone.
  5. The component device shall be assembled together with the telephone set selected as the test bed. This assembly shall be tested as TE, using the requirements specified in Table 1.2.2.

1.5.7 Grounding Arrangements

TE with provisions for connections to ground shall be connected to ground as instructed in the applicable test. Should the provision to ground be an optional connection or if the user manual has no clear instructions for connecting the TE to ground, then the TE shall comply with all the technical requirements of this document, both with and without the provision for connecting to ground.


1.6 Connecting Arrangements

Cords and plugs for TE that are intended for direct electrical connection to the public switched network shall comply with Part III, Acceptable Methods of Connection for Single Line and Multi-Line Terminal Equipment.

TE submitted for testing shall include all the equipment components necessary to provide the functions described in the manufacturer's manual, and for which compliance with this specification may be affected.


1.7 Operational Check

When directly connected to a network laboratory equivalent and to station apparatus, as deemed appropriate, the TE shall be fully operational with respect to the features described in the manufacturer's manual and which are necessary to perform the tests in Section 3. When the operational checks are repeated following the application of the electrical stress of Section 2, the TE may become partly or fully inoperable.


1.8 Ringer Equivalence Numbers

The Ringer Equivalence Number (REN) for a TE is the value determined below as appropriate:

For individual equipment intended for operation on loop-start and ground-start telephone facilities, the following quotients shall be formed:

Five times the impedance limitation listed in Table 3.7.3.1, divided by the minimum measured AC impedance, as defined in Section 3.7.3.2, during the application of simulated ringing, as outlined in Table 3.7.3.1.

For TE with interfaces defined in this document using network-provided analog ringing, the REN value must be greater than or equal to 0.1. The termination of an interface may consist of any combination of devices, subject to the requirement for which the sum of the RENs of all the devices does not exceed five.


1.9 Registration Requirements for Telecommunications TE

Where it is determined that TE is fully operational after both types B and A surge voltages have been successfully applied, two sets of test results (before surge voltage and after Type A surge voltage) must be submitted. However, if the TE is operational after Type B surge but the device becomes damaged and/or not fully operational after Type A surge voltages have been applied, three sets of results must be included in the TE test report. If no After Type B surge tests were performed on the original sample, the Type B surge voltage should be applied to a second sample and the After Type B surge test results can then be obtained from this second sample. Both samples shall be documented in the test report.

Recognized testing laboratories shall document all test results and test methods used and prepare a CS-03 test report as per Annex D of Declaration of Conformity DC-01, Procedure for Declaration of Conformity and Registration of Terminal Equipment.

  • RSS
  • Share
Date modified: