Avaya IPO500 Redundancy

[divyeshpatel]

Hi Guys.

Apologies if I haven't looked enough on the forum, but I couldn't find much information on this.

We have a potential project where the customer is looking into the possibility of two remote sites linked together using SCN.

Each site will have IP Phones and ISDN30 trunks. As an added feature we are discussing the IPO's capability to provide redundancy in case of hardware failure.

I have read about the IPO500's redundancy capabilities such that IP phones can automatically re-register to a secondary IPO500 if the primary IPO500 goes down.

I am wondering if anyone could shed some light on how this works - can we configure the primary/secondary IPO500 IP addresses on the IP phones so that they look for the secondary switch if the primary switch does not respond? Are there only specific handsets that support this capability?

Also, I believe that VM Pro or VM Preferred edition as it is better known now provide such a feature too?

Many thanks!

 

[intrigrant]

basically you can setup each IPO to be a backup for the other.
If one of the two fails then the Ip Phones registered to the location which fails will register to the backup system ( if possible ) were the user licenses from the failing system temporary will be available on the backup system.
The actual impact is that if one system fails the users registered on that system will be off-line for approx ten minutes and then the can work through the backup system.
Local Lines/analog phones/digital phones will not work of course

 

[divyeshpatel]

Hello.

Thanks for your reply.

Just wondering how this would happen. I'm considering a scenario where switch A and B are connected using SCN. If switch A lost power, how would IP Phones connected to switch A know where switch B is sitting along with its IP Address?

Thanks!

 

[TomMills]

you program the systems so that they know where the fallback destinations are.

http://www.twitter.com/tem1985

ACSS-SME
fo shizzle ma nizzle.

 

[NewNic]

One thing to keep in mind, you say if one system loses power. The Phones will need power either POE or a brick. If they dont have power your in the dirt.

 

[mattKnight]

>One thing to keep in mind, you say if one system loses power. The Phones will need power either POE or a brick. If they dont have power your in the dirt.

And the data equipment must stay live too. The phones must be able to route to the alternative system

Take Care

Matt
I have always wished that my computer would be as easy to use as my telephone.
My wish has come true. I no longer know how to use my telephone.

 

[divyeshpatel]

Hi Guys.

Thanks for your comments.

How does the fallback information get passed to the IP Phones if switch A wasn't powered?

We're looking at hardware failure at Switch A rather then trunk failure. I would assume that for trunk failure, switch A will re-direct traffic via trunks on switch B (as this would be programmed as fallback route) but what if switch A failed to power, however all data equipment/PoE switches to power IP Phones were working as normal.

We will be having the switch located in one building while the IP phones will reside at another build next door.

How would the phones know the IP Address for switch B to register with it. Also, for such a failure would licenses from switch A be usable on switch B? (as per intrigrant's reply?)

Cheers!

 

[tlpeter]

The phones know the redundant system.
If the switch or IPo goes down then the phone is trying to register to the normal ipo once a minute.
Is does do this 3 times and then it tries to register to the fallback ipo.
When the router is still working then phones will keep working too.


Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.

 

[mattKnight]

>How would the phones know the IP Address for switch B to register with it

Thjis information is passed in the H323 registration process, in the alternative gatekeeper list

Take Care

Matt
I have always wished that my computer would be as easy to use as my telephone.
My wish has come true. I no longer know how to use my telephone.

 

[divyeshpatel]

Thanks for the information guys.

Just wondering whether licenses from Switch A will temporarily work on Switch B for the phones to register and continue working in fallback mode.

Or is there a requirement for us to provide for extra licenses on Switch B for redundacy purposes?

 

[tlpeter]

Release 5 needs licenses on the redundant system.
Release 6 learns the licenses and does not need licenses on the redundant system.


Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.