Exchang URLs

[risingflight143]

I am doing transition from Exchange 2007 to Exchange 2013
Below are the Exchange 2007 URLs please do check them and guide me where i am wrong so that i will configure them on exchange 2013. My users on Exchange 2007 are just using owa and active sync. but with Exchange 2013 we would use most of the features. My exchange server is mail.mydomain.com

Get-OwaVirtualDirectory -server mail | fl Name,InternalURL,ExternalURL
Name : owa (Default Web Site)
InternalUrl : https://mail.mydomain/owa
ExternalUrl : https://mail.mydomain/owa

Name : Exchange (Default Web Site)
InternalUrl :
ExternalUrl :
Name : Public (Default Web Site)
InternalUrl :
ExternalUrl :
Name : Exchweb (Default Web Site)
InternalUrl :
ExternalUrl :
Name : Exadmin (Default Web Site)
InternalUrl :
ExternalUrl :


Get-OABVirtualDirectory -server mail | fl Name,InternalURL,ExternalURL
Name : OAB (Default Web Site)
InternalUrl : https://mail.mydomain/OAB
ExternalUrl : https://mail.mydomain/OAB

Get-ActiveSyncVirtualDirectory -Server mail | fl Name,InternalURL,ExternalURL
Name : Microsoft-Server-ActiveSync (Default Web Site)
InternalUrl : https://mail.mydomain/Microsoft-Server-ActiveSync
ExternalUrl : https://mail.mydomain/

Get-WebServicesVirtualDirectory -Server mail | fl Name,InternalURL,ExternalURL
Name : EWS (Default Web Site)
InternalUrl : https://mail.mydomain/EWS/Exchange.asmx
ExternalUrl : Do i need to configure here external url

C:\Users\Administrator.KNG\Desktop>Get-ClientAccessServer | fl Name,AutoDiscoverServiceInternalUri
Name : MAIL
AutoDiscoverServiceInternalUri : https://mail.mydomain/autodiscover/autodiscover.xml

How do i configure Offline address book in exchange 2013 using powershell
please do refer the screenshot as this is the current setting on exchange 2007