First, I love having the opportunity to play unified communications professor. So, as much as I hope that I am helping my readers, I am helping myself just as much. Are you ready? Avaya Media Gateways Avaya supports two styles of media gateways. The first, and oldest, is the G
|Published (Last):||16 June 2010|
|PDF File Size:||20.68 Mb|
|ePub File Size:||20.32 Mb|
|Price:||Free* [*Free Regsitration Required]|
First, I love having the opportunity to play unified communications professor. So, as much as I hope that I am helping my readers, I am helping myself just as much. Are you ready? Avaya Media Gateways Avaya supports two styles of media gateways. The first, and oldest, is the G These cards are used for both redundancy and capacity.
You can configure different sets of phones to connect to different C-LANs. The H. Of those, only the G and G are available for purchase today. The rest have been end-of-sale for a number of years. Like the G, the H. Also, H. There can be several CM servers and the gateways need to know which one they should hitch their wagon to.
There will always be a prime CM server. This is the main brain that runs the entire system. Call processing, vectors, call center, routing, and device management all live there What happens if the main brain dies? No problem. Under sunny day conditions, an ESS is running, but it will not perform call processing or other CM tasks until a gateway registers to it. At that point, it wakes up and functions as if it was the prime processor.
Although Avaya supports up to 63 ESS processors in a single system, most enterprises implement far less than that. An LSP was originally designated to be a server that provides survivability for a branch location, but over the years, Avaya has increased its capacity and scale to the point where it now looks like its ESS brother.
How does an H. The MGC list instructs the H. These IP addresses are priority ordered and the gateway attempts to register to them in the order that they are listed…. It would be smarter to attempt registration to the main processor a few times before entering into disaster recovery mode. This is where the transition point TP comes into play. The TP separates the primary server s from the survivable servers. If my example had a TP of 2, the PE and C-LAN of the main CM will be tried several times with 10 seconds between each attempt before the gateway decides that they are not going to answer.
Honestly, I would love it if there were two transition points. This allows me to create a policy for enterprise survivability and another policy for local survivability. What say you, Avaya? So, how long does a gateway keep trying? Every gateway will attempt to register to an IP address above the TP until the primary-search time is reached.
After that, it attempts to connect to the servers below the TP. At that point, it will try any IP addresses below the line following the same rule of seconds between each registration attempt. There is another value we need to be concerned with. This time includes attempts above and below the TP. Making it real Unfortunately, there is no centralized way to configure this.
You make the magic work by setting the configuration parameters on every gateway in your Aura system. The commands to create an MGC list similar to my example will look something like this: set mgc list
Understanding Avaya Media Gateway Survivability
They support multiple protocols, and offer a high degree of reliability, security, and performance at every price point. G Media Gateway This branch-office gateway allows businesses to economically extend headquarters communications applications to small branch offices with two to fourteen extensions. The G Gateway extends the enterprise communications capabilities in the headquarters location out to a branch location and is ideally suited for branch locations needing from 2 to 14 extensions. The system gains its functionality from a centralized Avaya Media Server running Avaya Communication Manager, but has several survivability options that allow communications to continue operating even if the connection to the main server is lost for any reason. Government agencies to protect sensitive information. The Avaya G also functions as an edge router to support the consolidation of voice and data traffic over an IP network.
G650 Media Gateway