antenna equipment, and a single outdoor unit (RFU) and antenna device can support up to 8 base station units or access units. ALV Ari Base allows the same outdoor unit (RFU) and antennas to be used for both Walkair Bs-bu and Breeze access bs-sh. The result is that Breeze access or Walkair carrier can join the base without adding outdoor units and antennas Station, that is, no additional outdoor work is required to add Breeze Access or Walkair carrier to the base station. Alvari Base Solution
Att's Systimax PDS (premises distribution system) cabling System integrates the entire communication with a single wiring system, including voice, data, image, monitoring and other equipment needed wiring.
International standards for PDS
Att's PDS structured wiring system is designed by Bell Labs in accordance with the standards of the American Electronics Association and the Telecommunications Industry Association, and has passed the test at the factory, with the following standards:
Cable sta
With the development of network technology in the Times, various communication devices have emerged, and switches are one of them. The following describes rack-mounted switches in detail, the description above includes its construction and usage principles for your reference only.
In some technical books or articles, we often see many terms about vswitches. Many of them are translated directly from English, and some are named by manufacturers for some purpose. The names of these vswitches are co
Release date: 2011-10-18Updated on: 2011-10-18
Affected Systems:Asterisk Open Source 10.xAsterisk Open Source 1.8.xDescription:--------------------------------------------------------------------------------Cve id: CVE-2011-4063
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
The Asterisk implementation has a denial of service vulnerability. Due to uninitialized variables, users remotely authentica
Release date:Updated on: 2011-03-17
Affected Systems:Asterisk 1.8.xAsterisk 1.6.xUnaffected system:Asterisk 1.8.3.1Asterisk 1.6.2.17.1Asterisk 1.6.1.23Description:--------------------------------------------------------------------------------Bugtraq id: 46897
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
The Asterisk Manager Interface has a Denial-of-Service vulnerability. Remote attackers can expl
Release date: 2012-04-23Updated on: 2012-04-24
Affected Systems:Asterisk 10.xAsterisk 1.xUnaffected system:Asterisk 10.3.1Asterisk 1.8.11.1Asterisk 1.6.2.24Description:--------------------------------------------------------------------------------Bugtraq id: 53210CVE (CAN) ID: CVE-2012-2415
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
Asterisk has a security vulnerability in the implementation of
Release date:Updated on:
Affected Systems:Asterisk 10.4.1Asterisk 10.3.1Asterisk 10.3.0Asterisk 1.8.12.1Asterisk 1.8.10.1Description:--------------------------------------------------------------------------------Bugtraq id: 54317Cve id: CVE-2012-3812
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
Asterisk has a remote denial of service vulnerability. Attackers can exploit this vulnerability to ca
Release date: 2011-12-08Updated on: 2011-12-09
Affected Systems:Asterisk 1.xDescription:--------------------------------------------------------------------------------Bugtraq id: 50990
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
Asterisk has a security vulnerability. Attackers can exploit this vulnerability to obtain valid user names.
When the regular, user/peer NAT sets different ports for r
Release date: 2011-12-08Updated on: 2011-12-09
Affected Systems:Asterisk 1.xDescription:--------------------------------------------------------------------------------Bugtraq id: 50989
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
Asterisk has a security vulnerability in implementation. Attackers can exploit this vulnerability to cause invalid memory locations for server reference and DOS.
When
Multiple Asterisk products OutofCall Message Denial of Service Vulnerability (CVE-2014-6610)
Release date:Updated on:
Affected Systems:AsteriskAsterisk Open Source 12.xAsterisk Open Source 11.xDescription:Bugtraq id: 69962CVE (CAN) ID: CVE-2014-6610
Asterisk is a free and open-source software that enables the Telephone User Switch (PBX) function.
Multiple Asterisk products have a remote denial of service vulnerability. Attackers can exploit this vulne
Implement callback AGI (PHP)
Calling back via agi is a simple technique and can be used as long as you know it.
[Capiin]Exten = gt; 1234/016066666, 1, Wait, 1Exten = gt; 1234/016066666, 2, AGI, callback. phpExten = gt; 1234/016066666, 3, Hangup
Callback. php Ob_implicit_flush (true );Set_time_limit (0 );$ Err = fopen ("php: // stderr", "w ");$ In = fopen ("php: // stdin", "r ");While (! Feof ($ in )){$ Temp = str_replace ("\ n", "", fgets ($ in, 4
, power supplies, cables, and optical modules, is no less than five thousand RMB per year. In addition, the power of these devices is not small, and the power of each power is calculated as 0.5 yuan. The cost of electricity is only several thousand yuan a year. After all calculations, the O M cost for each office should be at least 60 thousand yuan in five years. There is also a resizing problem. In the next five years, an office will have to invest more than 0.3 million yuan, and 30 offices wi
On Linux, Asterisk-Linux Enterprise Application-Linux server application is installed without hardware. For details, refer to the following section. I recently studied an Open Source PBX: Asterisk. After a week of hard work, there was no obstacle to installing it for N times. I will summarize it for you.
Asterisk is what I don't want to talk about, interested in reading www.asterisk.org and www.voip-info.org. Maybe it is because the mainstream version
. network video conferencing software VMukti
Vmukti is an online video conferencing software. It is the first open-source PBX and conferencing software. It supports sound/Video Communication and desktop sharing at home or in the office. It uses VoIP technology.
3. Video Conferencing System Ekiga
Ekiga is a video conferencing program compatible with SIP and H.323. It is compatible with VoIP and IP phones. Through Ekiga, you can perform video and audi
obvious advantages over the traditional layer-2 data network, and is especially suitable for carrying high-level base station businesses and large-account leased line businesses.
Due to the lack of QoS and network security of Users' Services, the IP metropolitan area network is mainly characterized by low cost and good scalability, use L2 switching devices to access the Internet and other low-level IP services with low real-time and reliability requirements.
The full-service access network tech
lines, LAN interconnection, and PBX Programmable switch interconnection. It can also meet the needs of a small number of users to transmit kbps and kbps of broadband signals.
2. SDSL single-line digital user loop)
There is also an HDSL product that transmits T1/E1 signals on a pair of twisted pair wires, often called SDSL, a single-line digital user loop.
3. ADSL Asymmetric Digital user line)
ADSL is an asymmetric broadband access network technology,
network, or internal networks of enterprises, to send local and long-distance calls, you do not need to pay for each call. At the same time, the remaining bandwidth for voice transmission can also be used to transmit other data. This method is more effective when using an existing data network to send long-distance calls. Software PBXPrivate Branch Exchange group switch): the VoIP PBX technology is software-based. This makes it easier to expand, upgr
interface protocols. It can smoothly communicate with existing IP networks through standard IP interfaces and network protocols; integrate or replace it with the carrier or enterprise PBX voice network through E1 relay/FXO/R2/DSS1/Q/sig and other standard protocols and interfaces; SIP/H.323 is used to achieve cross-wide IP telephone communication or timely messaging. IT is connected to the existing IT or CT platform through open APIs, integrates and
, as well as shared workspace and file sharing, travel needs can be reduced or even canceled, this saves hundreds of thousands or even millions of dollars. Using the Conference function in the room rather than using the service also reduces the cost.
In the world of UC, communication functions have become software applications, reducing the need for multiple servers in each location and branch. Instead of independent PBX/IP PBXs, email, voice mail, co
channels, including email, telephone, and fax, so that users can access the applications and information they need at any time, anywhere, from any device, in this way, users have a greater degree of freedom to maintain high efficiency during remote work.
With Unified Communication, previously dispersed servers and applications can now be integrated into a single address book on a single platform, a single directory, or desktop system. It is a super binder that integrates key network and communi
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