how to configure softphone in AVAYA -CM

[dang22]

i want configuere sip account with avaya ip softphone .
my system Avaya Aura® Communication Manager6.6 and avaya system platfrom 6.3. site admin 6.
thank

[mlombardi1]

SIP endpoints register to Session Mgr. You'll need a System and Session Mgr.

[dang22]

how to settings system avaya sesion manager. my system only avaya CM and System pflatfrom.
G450 and S8800
-I can set the session manager on Communtion s8800 after installation manager
thank you.