Lync Server Federation basics

Enable federation 

Topology builder > Rt. click Edge pool > properties > Enable Lync Federation  

Lync CSCP > Federation and External Access > External Access Policy >  

"Enable communication with federated partners" and "Remote Users" 

  

Types of federation and how to enable each 

1. Discovered Partner Domain (aka Open Enhanced Federation) -  

CSCP > Federation and External Access > Enable Partner Domain Discovery 

DNS record <_sipfederationtls._tcp.domain> 

  

2. Allowed Partner Domain (aka Enhanced Federation) 

CSCP > Federation and External Access > SIP Federated Domain > add the business partner’s domain name. 

  

3. Allowed Partner Server (aka Direct Federation) 

CSCP > Federation and External Access > SIP Federated Domain > add the business partner’s domain name as well their access edge FQDN