Consultant    
Organization Name    
Date    
     
License    
Lync Standard Server     
Lync Enterprise Server     
Lync 2010    
Standard CAL    
Enterprise CAL     
Plus CAL     
     
Annual user count growth rate   %   
     
Server Hardware     
Virtual or Physical     
Hyper-V/VMWare/Other    
     
Endpoint Hardware    
Lync "Oak"    
Lync "Aries" common area    
Lync "Aries"    
Lync "Tanjay"    
Analogue Devices     
Qualified Devices     
Portable Phone Devices     
     
Switches/Routing    
 POE Switch ports rq'd    
 Firewall    
 Reverse Proxy    
     
     
     
SIP Domains    
SIP address format     
     
Features    
IM & Presence    
Web Conferencing    
Enterprise Voice    
Group Chat/Persistent Chat  
Mobile Access    
Archiving    
Monitoring
Hybrid Mode Yes/No  
     
Integration    
Outlook Web App    
SharePoint    
Blackberry    
CICU    
System Center Ops Mgr    
     
Federation    
Specific domains    
Open federation    
PIC: Yahoo!    
PIC: AIM    
PIC: MSN/Skype    
XMPP: Google    
XMPP: Jabber    
     
     
     
High Availability    
Enterprise pool - Front End     
Enterprise pool - A/V     
Enterprise pool - Director    
Enterprise pool - Edge     
SQL Server     
Load balancing methodology     
     
Site Resiliency     
     
Clients    
Minimum client level    
     
PSTN Connectivity     
SIP Trunk Provider    
Analogue Trunk Type  POTS / PRI /  
Analogue Trunk Channels    
     
 Gateways        
     
     
Public DNS Management    
DNS Vendor   ie GoDaddy, etc  
DNS Vendor Login Creds    
Contact for DNS Mgmt   if outside IT  
     
 Internal DNS     
 Split Brain DNS Present         Yes / No   
     

 Here is another checklist:
http://unifiedcollaboration.nl/2011/10/19/lync-inventory-sheet-in-excel/