antennas.The FIFA World Cup has already begun, and in this regard, in several arenas of the championship, we deployed our new infrastructure. One of the arenas - "St. Petersburg", home stadium FC "Zenith". In this post we will talk about how the connection is made on one of the main venues of the tournament, where we hide the antennas, and why our engineers go four thousand steps before each match (if not more often). material on how to monitor the mobile network in Moscow ...
What changes when the applied frequency band is changed in radio communication is not always correctly formulated even by experienced radio amateurs. On the one hand, the formula for transferring Friis is extremely simple, and there seems to be nothing to discuss. On the other hand, in this formula, in addition to explicitly mentioning the wavelength λ, it is implicitly hidden in other coefficients. There are many statements, notes and articles, that with higher frequencies the power of radio links is worse, there are no less articles of "myth exposures" - saying that there is nothing worse than ...
This week we presented an update to 3CX v15.5 Update 5 BETA. In the update, new types of reports appeared, the record of conversations was improved, new CRM-integration modules (including Russian AmoCRM) and other improvements were added. Let's consider what appeared in this release. See video .
This opportunity was often requested by the heads of call centers. Now the supervisor in one report can analyze the work of several groups of operators. If the call center serves several projects - such a report is simply necessary!
I started to get acquainted with MicroSIP several years ago. It is simplicity and undemanding to the resources on the background of competitors made him pay attention to him. And now, when all the functionality necessary for the work appeared in it, I decided to implement it for work inside the company.
Auto provisioning or the automatic configuration distribution mechanism is used in most hardware phones. There is no such mechanism in MicroSIP, but there is a simple configuration file with which we will actually work. And the presence of a portable version of the program will play into our ...
When in 2013 Analog Devices released SDR transceiver AD9361 - there was a real revolution in digital radio communication. SDRs were before, but now you could get everything in one chip: 2 channels for reception and 2 for transmission (with onboard 12-bit DACs and ADCs) with channel widths up to 56MHz, local generators and radio paths - for operation in the range from 70 (for transmission from 47) to 6000 MHz. On the AD9361 "out of the box" you can implement almost any digital transceiver, except perhaps only [leech=#] 500Mhz, below the noise level "> UWB [/leech] and the beginner to gain popularity of the 60GHz ...
block.Regional registrar RIPE gave the last block of IPv4. At the part of other registrars the blocks ran out a few years ago: APNIC in 201? RIPE in 201? and ARIN in 2015. AFRINIC still has a few public addresses, however these "stocks" will come out very soon (experts predict That it will happen already in 2019). Why it happened, what are the ways to solve the problem and when experts expect the transition to IPv? we will tell further. /Flickr / Susan Adams / CC That led to "depletion" of addresses In the seventies on the planet lived 4.5 billion people...
The emergence of the "universal Internet" uncontrollable by the authorities is unacceptable both for the Russian state and for domestic telecoms operators.
Global satellite Internet
In 201? the private aerospace company S raceX requested permission from the US government to deploy a satellite network to provide high-speed Internet access services globally in Ku (10.7-18 GHz) and Ka (26.5-40 GHz). In addition to SpaceX, applications for the output of their own communication devices were filed by OneWeb, Telesat, O3b Networks (O3b - medium-orbit European system, supervised by SES) and ...[/h]
Today is the Day of Radio and Communication, perhaps the most beloved engineering festival in Russia. It is celebrated by employees of cellular and fixed communication, radio, developers, engineers. And this is not surprising, because no company, no one thinks himself today without communication. Every year at industry conferences and in radio and communication publications, a quick end or, at best, a transformation beyond recognition is predicted. But nevertheless, technologies are continuously developing: in 2003 there was still a paging communication, and this autumn the world is waiting for ...
Recently I ran into the GNURADIO program, and more specifically with its installation and configuration.
Of course, you can install through "Apt install " or as the author of GNURadio advises through PyBOMBS , but in the first case, there is no guarantee that this will be the latest version, in the second there were errors during installation. But in any case, I always wanted the latest version (although the latter does not always mean better!).
Today we have prepared for you one more selection with lectures and webinars of our experts (the last "compact digest" you can find here ). This time we talk about the features of the implementation of SORM-? the construction of BRAS based on SCAT DPI, as well as the pros and cons of IPv6.
antennas.The FIFA World Cup has already begun, and in this regard, in several arenas of the championship, we deployed our new infrastructure. One of the arenas - "St. Petersburg", home stadium FC "Zenith". In this post we will talk about how the connection is made on one of the main venues of the tournament, where we hide the antennas, and why our engineers go four thousand steps before each match (if not more often). material on how to monitor the mobile network in Moscow ...
What changes when the applied frequency band is changed in radio communication is not always correctly formulated even by experienced radio amateurs. On the one hand, the formula for transferring Friis is extremely simple, and there seems to be nothing to discuss. On the other hand, in this formula, in addition to explicitly mentioning the wavelength λ, it is implicitly hidden in other coefficients. There are many statements, notes and articles, that with higher frequencies the power of radio links is worse, there are no less articles of "myth exposures" - saying that there is nothing worse than ...
When in 2013 Analog Devices released SDR transceiver AD9361 - there was a real revolution in digital radio communication. SDRs were before, but now you could get everything in one chip: 2 channels for reception and 2 for transmission (with onboard 12-bit DACs and ADCs) with channel widths up to 56MHz, local generators and radio paths - for operation in the range from 70 (for transmission from 47) to 6000 MHz. On the AD9361 "out of the box" you can implement almost any digital transceiver, except perhaps only [leech=#] 500Mhz, below the noise level "> UWB [/leech] and the beginner to gain popularity of the 60GHz ...
block.Regional registrar RIPE gave the last block of IPv4. At the part of other registrars the blocks ran out a few years ago: APNIC in 201? RIPE in 201? and ARIN in 2015. AFRINIC still has a few public addresses, however these "stocks" will come out very soon (experts predict That it will happen already in 2019). Why it happened, what are the ways to solve the problem and when experts expect the transition to IPv? we will tell further. /Flickr / Susan Adams / CC That led to "depletion" of addresses In the seventies on the planet lived 4.5 billion people...
The emergence of the "universal Internet" uncontrollable by the authorities is unacceptable both for the Russian state and for domestic telecoms operators. 
Today is the Day of Radio and Communication, perhaps the most beloved engineering festival in Russia. It is celebrated by employees of cellular and fixed communication, radio, developers, engineers. And this is not surprising, because no company, no one thinks himself today without communication. Every year at industry conferences and in radio and communication publications, a quick end or, at best, a transformation beyond recognition is predicted. But nevertheless, technologies are continuously developing: in 2003 there was still a paging communication, and this autumn the world is waiting for ...
