- Out-of-Stock
Jonathan Davidson, James Peters
| Author: Jonathan Davidson, James Peters Translation: Aleksandra Jakubowska ISBN: 83-7279-500-2 Format: 16.5 x 24 cm, 344 pages Soft binding Publisher: MIKOM Series: Cisco Edition: First |
| About the book |
| VoIP technology integrates voice and data transmissions. It quickly becomes a very important factor in network communication. It allows to reduce operating costs, gives greater flexibility of operation, allows the use of many expanding applications. The book presents a comprehensive description of this new technology to help telephony and data processing specialists plan and organize new networks. The publication presents the construction and operation of a modern telephone infrastructure, the basic concepts of data and voice over the network, the transmission of voice as data and IP signaling protocols used in networks in cooperation with today's telephone systems. The authors discuss various VoIP advantages and applications and show how to ensure good voice quality on the network. The reader will find here: ? introduction of IP signaling protocols to PSTN services, including SS7; ? information on how VoIP can work with an existing telephone system in an efficient and scalable way; ? discussion of such VoIP issues as disruptions, latency, packet loss, codecs, quality of service tools and average results; ? presentation of functional components related to the use of Cisco gateways needed to introduce VoIP networks. Table of Contents: in the file 83-7279-500-2.pdf |
3-color e-Paper display with a diagonal of 1.54" and a resolution of 152x152 px. SPI interface. Without PCB. Waveshare 1.54inch e-Paper (C)
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Black and white e-Paper display with a diagonal of 7.5" and a resolution of 880x528 px. SPI interface. Without PCB. Waveshare 7.5inch HD e-Paper
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E-Paper display with a diagonal of 7.5" and a resolution of 880x528 px with passive power supply via NFC. Waveshare 7.5inch NFC-Powered HD e-Paper
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Module with e-Paper display with a diagonal of 7.5" and a resolution of 880x528 px. Communication via the SPI interface. Waveshare 7.5inch HD e-Paper HAT
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Set with a 7.5" e-Paper display with passive power via NFC, NFC module and microSD card. Waveshare 7.5inch NFC-Powered HD e-Paper Eval Kit
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3-color e-Paper display with a diagonal of 7.5" and a resolution of 880x528 px. SPI interface. Without PCB. Waveshare 7.5inch HD e-Paper (B)
No product available!
3-color (red, black, white) e-Paper display with a diagonal of 1.54" and a resolution of 200x200 px with passive power supply via NFC. Waveshare 1.54inch NFC-Powered e-Paper (BB)
No product available!
Minicomputer with a Rockchip RK3399 six-core processor (Dual-core Cortex-A72 + Quad-core Cortex-A53). It is equipped with the Mali-T864 GPU, 4 GB RAM and 16 GB eMMC. The set provides WiFi communication and Bluetooth 5.0. Orange Pi 4B
No product available!
Minicomputer with a 6-core Rockchip RK3399 processor (Dual-core Cortex-A72 + Quad-core Cortex-A53). Equipped with Mali-T864 GPU and 4 GB RAM. The set provides WiFi and Bluetooth 5.0. Orange Pi 4
No product available!
Minicomputer with a 2-core MT6572 ARM Cortex-A7 processor. Equipped with Mali-400 MP1 GPU, 512 MB RAM and 4 GB eMMC. The set provides WiFi, BT, FM, GPS and 3G. Orange Pi 3G-IOT-B
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Minicomputer with a 2-core MT6572 ARM Cortex-A7 processor. Equipped with Mali-400 MP1 GPU, 256 MB RAM and 512 MB eMMC. The set provides WiFi, BT, FM, GPS and 3G. Orange Pi 3G-IOT-A
No product available!
Heat shrink tube for electrical and mechanical insulation, diameter before shrinking 8 mm; diameter after shrinking 4 mm, set of 10 pieces, 1 meter long
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Minicomputer with a 6-core Rockchip RK3399 processor (Dual-core Cortex-A72 + Quad-core Cortex-A53). Equipped with Mali-T864 GPU, 4 GB RAM and 16 GB eMMC. The set provides WiFi and Bluetooth 5.0. Orange Pi 4
No product available!
The left Mecanum multi-directional wheel with a diameter of 80 mm, which consists of 9 rollers located around the circumference of the wheel. The wheel hub fits the popular TT motors
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The right Mecanum multi-directional wheel with a diameter of 80 mm, which consists of 9 rollers located around the circumference of the wheel. The wheel hub fits the popular TT motors
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Standard digital servo equipped with a metal gear. It is characterized by high torque and high durability. DS3230
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Jonathan Davidson, James Peters