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Server Addition Failover (Avoiding Select Server Edition) 1

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dwone555

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Jun 10, 2004
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I wanted to confirm my understanding, as I know others have setup this scenario. I've seen several posts on this, but not directly siting the documentation. Can any point me to the documentation in the Knowledgebase?

The customer has around 150 phones registered to the Primary Server with a Secondary Server as Backup to IP phones and groups. These phones are spread out to eleven sites all with a local 500v2 for local dial tone and analog station use. I have them all built with the "Location" specific groups, but understand I need SELECT Server Edition to allow the phones to fail over to an Expansion 500V2.

My plan is to go through each site and have the Phones register to each of the respective local 500v2 with backup to the Primary.

- All licensing is currently centralized, I should not need any local IP Endpoints at the 500V2 to complete this correct?
- Is the grace period for the phones configured to register to the local Expansion 500v2 (15) days if the Wan (Primary Server connection) was to go down?
- What happens to an active call if the Primary Server connection was to go down for an Expansion 500V2 site with a Phone registered to the Expansion 500V2?
 
If you want to avoid the phones to stay in discovering state if the WAN link is down you should register them with the local expansion and use either primary or secondary server as fallback.

Since the endpoint and user licenses are centralized in primary server you don't need to swap the, in any way.

The local expansions consume the needed licenses from primary server and can use them for 30 days if the connection to primary server is lost.

If IP routing is configured well IP phones send their RTP packets direct to it's talk partner. The IPOs are involved to create calls, transfer and conference calls. If you are in an active call the phones keep their speech path even if one of the involved IPOs goes down.

Fallback from primary or secondary server to a local IP500 is only possible with server edition select.
 
Here's your Star!

Thank you for the confirmation. Why would anyone use SELECT unless you need the capacity????
 
HA options in VMWare, ip phone fallback to expansion system, expansion to expansion trunks, LDAP sync, active-active VMPro...
 
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