FAX with Two Media 
The  UCM6200  supports  Fax  re-invite  with  multiple  codec  negotiation.  If  a  Fax  re-invite  contains  both  T.38  and 
PCMA/PCMU codec, UCM6200 will choose T.38 codec over PCMA/PCMU. 
 
Blacklist Configurations 
 
In  the  UCM6200,  Blacklist  is  supported  for  all  inbound  routes.  Users  could  enable  the  Blacklist  feature  and 
manage the Blacklist by clicking on "Blacklist". 
 
  Select  the  checkbox  for  "Blacklist  Enable"  to  turn  on  Blacklist  feature  for  all  inbound  routes.  Blacklist  is 
disabled by default. 
  Enter a number in "Add Blacklist Number" field and then click    to add to the list. Anonymous can also be 
added as a Blacklist Number. 
  To remove a number from the Blacklist, select the number in "Blacklist list" and click on . 
 
Figure 121: Blacklist Configuration Parameters 
 
  To add blacklist number in batch, click on    to upload blacklist file in csv format. The supported csv format 
is as below.