We have 3 pools. Pool1.contoso.com (3xFE), Pool2.contoso.com (2xFE) and Pool3.contoso.com (1xFE). Pool1 paired with Pool2

HOST: 6x Host Server records +  3 host pool1 records + 2 host pool1 records + 1 host pool1 records

SRV: How many records ?? Priority ??

_sipinternal._tcp.<domain>: How many records ?? Priority ??

sip.<domain>: How many records ?? Priority ??

You can choose your own selection.

I would prefer the pool1.contoso.com, because this pool has recommended 3 FE.

Second pool2.contoso.com

Third pool3.contoso.com

If a Client connects to one of this pools, which is not his home pool. The Client get a redirecht and would connect directly to his home pool

Must I create 3 SRV records ?? 

If 2 pools are off and there is not 3 records, users on pool 3 can not register on server, not ?

Yes, you should create more than one record for HA. You can configure different priority.

Now, I have only a SRV record for Pool1.

When a user that belong Pool3 tries to sign in Lync, ask for credential and it doesn't work. Pool1 can't authenticate and redirect user to Pool3..... Why ??

This is not the Default behavior. User will always be redirected normal.

If this is a new installation, check the replication between the pools. You can test with a manual sign in configuration on the client.

OK, it was time...

• Marked as answer by carlosdlra Saturday, June 20, 2015 6:00 AM

OK, it was time...

• Marked as answer by carlosdlra Saturday, June 20, 2015 6:00 AM

OK, it was time...

• Marked as answer by carlosdlra Saturday, June 20, 2015 6:00 AM

OK, it was time...

• Marked as answer by carlosdlra Saturday, June 20, 2015 6:00 AM