SAES-T-820 PDF - Narrow-Band Video Conferencing Systems - PDFYAR

This article is about SAES-T-820 which is about Narrow-Band Video Conferencing Systems and download SAES-T-820 PDF for telecommunication and electrical engineers, supervisors and project managers, telecom QCs, telecom QC Supervisors. This is saudi aramco standards of Telecommunication Engineering based on international codes and standards and useful for telecom and electronics engineering knowledge to get job as engineers, QC Supervisors and QC managers, Engineering managers and technicians.

SAES-T-820 PDF Download

SAES-T-820

SAES-T-820 PDF Download

Narrow-Band Video Conferencing Systems

SAES-T-820 is a standard established by Saudi Aramco that outlines mandatory compliance requirements for the design, procurement, and engineering of narrow-band videoconferencing systems. The standard focuses on the basic elements of videoconferencing, including audio, video, and graphical communications, and aims to ensure compatibility and interoperability among different systems.

Here are some key aspects covered by SAES-T-820:

Design and Engineering: The standard provides guidelines for designing and engineering narrow-band videoconferencing systems. It includes considerations for audiovisual inputs and outputs, synchronization of audio and video signals, and the utilization of communication links.
Procurement: SAES-T-820 specifies the requirements for procuring narrow-band videoconferencing equipment and services. This ensures that the procured systems meet the necessary standards and can seamlessly integrate with existing communication infrastructure.
Compatibility and Interoperability: The standard emphasizes the importance of compatibility and interoperability among videoconferencing systems. It defines common formats for audiovisual inputs and outputs, allowing different systems to communicate effectively and ensuring a consistent user experience.
Multipoint and Point-to-Point Sessions: SAES-T-820 covers both multipoint and point-to-point videoconferencing sessions over narrow-band communication services. It addresses the specific requirements and protocols needed to establish and maintain videoconferencing connections in these scenarios.

By following SAES-T-820, Saudi Aramco aims to establish a standardized approach to narrow-band videoconferencing systems. Compliance with this standard ensures that videoconferencing equipment and services meet the necessary quality, compatibility, and performance criteria, enabling effective communication and collaboration across different locations.

Industry Codes and Standards

The SAES-T-820 standard references several ITU-T (International Telecommunication Union – Telecommunication Standardization Sector) recommendations and other industry codes and standards. These references provide provisions and guidelines that are incorporated into SAES-T-820. It is important to note that the editions mentioned in the provided information were valid at the time of publication, and it is recommended to verify and apply the most recent editions of the recommendations and references listed. Here are some of the ITU-T recommendations referenced in SAES-T-820:

Series G – Transmission Systems and Media, Digital Systems and Networks:

G.703: Physical/electrical characteristics of hierarchical digital interfaces
G.711: Pulse code modulation (PCM) of voice frequencies
G.722: 7 kHz audio-coding within 64 Kbit/s
G.723: Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 Kbit/s
G.728: Coding of speech at 16 Kbit/s using low-delay code excited linear prediction
G.729: Coding of speech at 8 Kbit/s using conjugate-structure algebraic-code-excited linear prediction

Series H – Audiovisual and Multimedia Systems:

H.221: Frame structure for a 64 to 1920 Kbit/s channel in audiovisual teleservices
H.230: Frame-synchronous control and indication signals for audiovisual systems
H.231: Multipoint control units for audiovisual systems using digital channels up to 1920 Kbit/s
H.233: Confidentiality system for audiovisual services
H.242: System for establishing communication between audiovisual terminals using digital channels up to 2 Mbit/s
H.243: Procedures for establishing communication between three or more audiovisual terminals using digital channels up to 1920 Kbit/s
H.244: Synchronized aggregation of multiple 64 or 56 Kbit/s channels
H.261: Video codec for audiovisual services at p x 64 Kbit/s
H.262: Information technology – Generic coding of moving pictures and associated audio information: Video
H.263: Video coding for low bit rate communication
H.264: Video compression standard also known as MPEG4 AVC (Advanced Video Coding)
H.320: Narrow-band visual telephone systems and terminal equipment

Series T – Terminals for Telematic Services:

T.120: Data protocols for multimedia conferencing
T.123: Network-specific data protocol stacks for multimedia conferencing
T.125: Multipoint communication service protocol specification
T.135: User-to-reservation system transactions within T.120 conferences

These ITU-T recommendations provide guidance and specifications for various aspects of narrow-band videoconferencing systems, including audio, video, synchronization, protocols, and multimedia conferencing. Incorporating these recommendations into SAES-T-820 ensures that the design, procurement, and engineering of narrow-band videoconferencing systems comply with industry best practices and standards.

Design

Design
The design requirements outlined in SAES-T-820 for narrow-band videoconferencing systems include the following:

4.1: The standard specifically addresses narrow-band videoconferencing systems.
4.2: The two basic building blocks of the video system are the Codec (Coder and Decoder) and the Multi-point Control Unit (MCU). The video compression algorithm and transmission mechanism specified by the ITU-T recommendations should be supported by the Codec. The minimum video codec format to be supported is ITU-T H.261, and optionally ITU-T H.262, H.263, and H.264.
4.3: The supported audio codec signal format should comply with ITU-T G.711, and optionally ITU-T G.722, G.728, G.731, and G.729.
4.4: The Gateway network component’s selection depends on the network type and should support ITU-T H.310, H.320, H.321, H.322, H.323, and/or H.324 endpoints. Gateways facilitate communication between terminals on packet-based networks and ITU-T terminals on switched circuit networks or other packet-based networks.
4.5: The videoconferencing system should support both Point-to-Point and Multipoint configurations. Conferences can be set up between two or more clients without specialized multipoint control software or hardware. If a Multipoint Control Unit (MCU) is used, the system should support a flexible topology for multipoint conferencing, which can be centralized or decentralized.
4.6: The MCUs used in multiple terminals or sessions should meet the ITU-T H.231 recommendation, and all MCUs must be compatible with all audiovisual terminals.
4.7: The narrow-band videoconferencing system should support audio, video, and control signals.
4.8: The data signal for telematic support should comply with ITU-T T.120-Series recommendations.
4.9: Optional data encryption may be supported, and if enabled, encryption should adhere to the ITU-T H.233 recommendations. The encryption process should be signaled between the end-point equipment or end-point and MCU.
4.10: The audio/video terminal should support one or more audio configurations, including a handset function, hands-free function for a small group, and hands-free function for a large group.
4.11: The sensitivity of the handset terminal should meet the requirements specified in Table 1.

These design requirements ensure that narrow-band videoconferencing systems implemented in accordance with SAES-T-820 comply with the necessary technical specifications and provide compatibility, flexibility, and security for audio, video, and data communication in various configurations.

FAQs about SAES-T-820 PDF Download

Q1: What is SAES-T-820?

A1: SAES-T-820 is the Saudi Aramco Engineering Standard that governs the design, procurement, and engineering of narrow-band videoconferencing systems. It provides specifications and requirements for audio, video, and graphical communications, including common formats, protocols, and ITU-T recommendations.

Q2: What is the scope of SAES-T-820?

A2: SAES-T-820 applies to Multipoint and Point-to-Point videoconferencing sessions over narrow-band communication services. It covers the design and deployment of videoconferencing equipment, interconnection between terminals and network elements, and compliance with ITU-T recommendations.

Q3: What are the basic building blocks of a videoconferencing system?

A3: The basic building blocks are the Codec (Coder and Decoder) and the Multi-point Control Unit (MCU). The Codec handles video compression and transmission, while the MCU facilitates multipoint conferencing and control.

Q4: Which ITU-T recommendations should the video codec support?

A4: The video codec should, at a minimum, support the ITU-T H.261 format. Optionally, it can also support ITU-T H.262, H.263, and H.264 formats.

Q5: What audio codec signal format should the videoconferencing system support?

A5: The system should support the ITU-T G.711 audio codec signal format. Additionally, it can optionally support ITU-T G.722, G.728, G.731, and G.729 formats.

Q6: What network protocols should the gateway network component support?

A6: The gateway network component should support ITU-T H.310, H.320, H.321, H.322, H.323, and/or H.324 endpoints, depending on the network type.

Q7: Can videoconferencing sessions be conducted in both Point-to-Point and Multipoint configurations?

A7: Yes, the videoconferencing system should support both Point-to-Point and Multipoint configurations. Multipoint conferences can be set up between two or more clients, and a flexible topology for multipoint conferencing should be supported, either centralized or decentralized.

Q8: What ITU-T recommendations apply to Multipoint Control Units (MCUs)?

A8: MCUs used in multiple terminals or sessions should comply with ITU-T H.231, and they must be compatible with all audiovisual terminals.

Q9: Does the narrow-band videoconferencing system support data signals and encryption?

A9: Yes, the system should support data signals according to ITU-T T.120-Series recommendations. Optional data encryption can be supported, following ITU-T H.233 recommendations, and the encryption process must be signaled between the end-point equipment or end-point and MCU.

Q10: What audio configurations should the audio/video terminal support?

A10: The audio/video terminal should support one or more audio configurations, including a handset function, hands-free function for a small group, and hands-free function for a large group.

SAES-T-820 PDF – Narrow-Band Video Conferencing Systems

SAES-T-820 PDF Download

Narrow-Band Video Conferencing Systems

Industry Codes and Standards

Design

FAQs about SAES-T-820 PDF Download

Q1: What is SAES-T-820?

Q2: What is the scope of SAES-T-820?

Q3: What are the basic building blocks of a videoconferencing system?

Q4: Which ITU-T recommendations should the video codec support?

Q5: What audio codec signal format should the videoconferencing system support?

Q6: What network protocols should the gateway network component support?

Q7: Can videoconferencing sessions be conducted in both Point-to-Point and Multipoint configurations?

Q8: What ITU-T recommendations apply to Multipoint Control Units (MCUs)?

Q9: Does the narrow-band videoconferencing system support data signals and encryption?

Q10: What audio configurations should the audio/video terminal support?

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