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This standard provides performance requirements for Customer Premises Equipment (CPE) incorporating a Telephone Answering Device (TAD) and intended for analog wireline connection to the Public Switched Telephone Network (PSTN). Devices meeting these requirements should ensure...
This Recommendation provides an overview of the intelligent question answering service (IQAS) framework and describes the features, general requirements and functionality which form a framework to support the intelligent question answering (QA) service. The scope of this...
This Recommendation addresses the descriptions for interfaces among modules and functions related to intelligent question answering systems. In particular, the scope of this Recommendation includes interfaces and functional features for the following modules of the intelligent question...
This Recommendation describes metadata related to the intelligent question answering service (IQAS). The IQAS framework in [ITU-T F.746.3] already identifies some elements and attributes related to an IQAS; however, it does not define all elements needed to provide the basic features of an...
After an emergency call is completed (terminated either prematurely by the emergency caller or normally by the call taker), the call taker may feel the need for further communication. For example, the call may have been dropped by accident without the call taker having sufficient information about...
This document extends SIP with two header fields and associated option tags that can be used in INVITE requests to convey the requester's preference for user-interface handling related to answering of that request. The first header, "Answer-Mode", expresses a preference as to whether...
This memo describes use cases, requirements, and protocol extensions for using the Session Description Protocol (SDP) offer/answer model for establishing audio and video media streams over circuit-switched bearers in the Public Switched Telephone Network (PSTN).
This document provides information on how Public Safety Answering Point (PSAP) contact information is to be collected and documented. Today, due to FCC requirements to notify PSAPs, it is necessary to obtain accurate outage contact information for each PSAP. There is no centralized...
This standard specifies Radio Frequency (RF) immunity performance criteria for two-wire Telephone Terminal Equipment (TTE) having an acoustic output and two-wire TTE adjunct devices with connection port for Telephone Terminal Equipment (TTE) having an acoustic output. Acoustic output...
This Recommendation defines an H.248 package in order to request the MG to detect re-answer line signal on a particular TDM termination which supports CAS signalling, and to notify the MGC when the signal is detected. The re-answer capability supplements the basic call service and...
1.1 These requirements cover telecommunications-c
Secondary Protectors for Communications Circuits UL 497A 1.1 These requirements cover secondary protectors for use in single- or multiple-pair-type communications circuits that are intended to be installed in accordance with Article 800 of the National Electrical Code, ANSI/NFPA 70. 1.2 Secondary...
General This Recommendation describes a method of originating and answering calls on the 50-baud telex network by means of an automatic terminal using a simple telegraph-type interface for the exchange of data or messages. The equipment that processes these data or messages at the terminal...
Specifies requirements for auto-calling facilities incorporated in apparatus and includes requirements for automatic repeat attempts.
This International Standard will provide users of voice messaging systems with a consistent mode of interaction in a way that is independent of the underlying system implementations. The interface is based on a set of design guidelines annexed to this International Standard. The interface supports...
This document defines an eCall "Optional Additional Data" concept for the "Minimum Set of Data" (MSD) to be transferred from a vehicle to a 'Public Safety Answering Point' (PSAP) in the event of a crash or emergency via an 'eCall' communication transaction. This document defines: a) Protocol...
This standard provides the requirements associated with three different types of call waiting supplemental features that may be used on analog voicegrade switched access lines with loop-start signaling. The three features are called: - Call Waiting (CW); - Distinctive Call Waiting (DCW); - Calling...
This document defines an eCall "Optional Additional Data" concept for the "Minimum Set of Data" (MSD) to be transferred from a vehicle to a 'Public Safety Answering Point' (PSAP) in the event of a crash or emergency via an 'eCall' communication transaction. This document defines: a) Protocol...
