SIP device - Searching is not working in "mail to" field by "Is Equal to" and "End with" in customer login.

Steps :=- 

1. Login as customer.
2. Click on SIP device
3. Click on search.
4. Now try to search  by "mail to"  using "Is Equal to" and "End with" options.

Actual result :- 1. Searching is not working in "mail to" field by "Is Equal to" and "End with" options.

 2. In admin > SIP devices> search > mail to options "Is Equal to" and "End with" are not available.

Expected result :

  > "Is Equal to" , "Is Not Equal to" and  "End with" options should be remove from "mail to " search option in customer login.