Avaya ESS with Genesys

[Gremlin]

Anyone can advise Genesys suppport and deployment for multiple sites with Avaya ESS ?

I read a short document by Dave Smith on Genesys support for Avaya ESS, and it seems to indicate that [u][b]agents from all sites [/b] [/u] (e.g. the ESS site), register/point back to the main site's T-server. My concern here would be the bandwidth and data traffic from all the other sites registering back to this main site.

Imagine there are 200 agents are each of 4 sites, that would make 800 agents registering thru the WAN back to the single T-sever in the main site. surely a bottleneck...

Can it be designed such that for an Avaya ESS deployment.. agents at each site register to their local T-server via a local Avaya AES server? Or what is the industrial and recommended practice?

thanks!
- p

[Mike Kamlet]

We use the ESS solution and have port networks spread across two data centers.  The AES servers also reside in separate data centers and we have split the primary/backup T-Servers to match the AES servers.

We are engineering each Avaya to handle somewhere between 3000-4500 agents, and no we don't see any WAN issues with this.

[Gremlin]

Hi mike,

thanks for your reply. hope you can clarify on some concerns i have below...

some questions i have..

1. is the AES and back-up T-server at the ESS site active or on warm/cold standby ?
2. during a WAN outrage where, both site (main and ESS) operate on it's own, will the AES and T-server backup at the ESS site automatically kick-in?
3. if the T-server at the main site goes down, all agents (at every site) will then register to the T-server backup at the ESS site.. is this correct?

thank you in advance!

-p

[Mike Kamlet]

1. is the AES and back-up T-server at the ESS site active or on warm/cold standby ?

[color=blue]We use the hot-backup -- so both AES servers are active.  Additionally we don't care which "side" is primary[/color]

2. during a WAN outrage where, both site (main and ESS) operate on it's own, will the AES and T-server backup at the ESS site automatically kick-in?

[color=blue]This has not happened, nor do we expect it to -- you will have some unpredictable behavior in cases where there may be a WAN issue between sites -- remember some of this depends on the behavior of SCS (which we also have split primary/backup between data centers.[/color]

3. if the T-server at the main site goes down, all agents (at every site) will then register to the T-server backup at the ESS site.. is this correct?
[color=blue]Yes all clients will now connect to the backup -- this occurs in any HA failover configuration, regardless of the location of the T-Server[/color]

thank you in advance!

[Gremlin]

Thanks Mike,

Your information is indeed very useful and valuable. Got one last question...

1. assuming your have 300 agents in the Main site and 300 agents at the ESS site,
    a) you need 600 TSAPI or DLG license on the AES at each site for T-server integration at each site? or 300 lic at each site?

[Mike Kamlet]

1. assuming your have 300 agents in the Main site and 300 agents at the ESS site,
    a) you need 600 TSAPI or DLG license on the AES at each site for T-server integration at each site? or 300 lic at each site?

[color=blue]Not an expert on the Avaya licensing -- but if you have an AES server at each site, I'd assume you'd have them as active/active and would need 600 licenses (not sure if Avaya licenses backup or not)

We have each AES server monitoring all the agents on the switch[/color]

[TM]

Depending on the release of AES, licensing can be pooled on a license server and used by the AES that needs it.  IIRC this came out in the 4.2 release of AES.

[Gremlin]

Hi again,

I have a new request from my client to deploy ESS at another site. i.e. there will now be a Primary Site (Main Avaya Site 1) with 2 ESS Sites (ESS Site 2 and ESS site 3).

In this case, I understand that I cannot deploy T-server (HA) on the other ESS Site (ESS Site 3),[font=RED] can I ? [/font]
... since T-server and T-server(HA) only works in pairs.

What would be the recommended Genesys design for a scenerio like this with more than 1 ESS site?

Any advise would be much appreciated.

thanks!
ongkjp

[mike kamlet]

I'm assuming there are still only 2 AES servers -- so you'd deploy the HA T-Servers associated with the AES servers.

Mike