String resource edits for Telecomm

Adjust strings in Telecomm per ewong@'s edits.

Bug: 17446974
Change-Id: Ife5fa5d05e8c0bd0bc205c7f4fce1290e5ace55b
diff --git a/res/values/strings.xml b/res/values/strings.xml
index a5d8d9f..acd547f 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -78,10 +78,10 @@
 
     <!-- Message indicating that the user is not allowed to make non-emergency outgoing phone calls
          due to a user restriction -->
-    <string name="outgoing_call_not_allowed">This user is not allowed to make non-emergency phone calls</string>
+    <string name="outgoing_call_not_allowed">Only emergency calls are allowed by the device owner</string>
 
     <!-- Call failure message displayed in an error dialog used to indicate that a phone number was not provided -->
-    <string name="outgoing_call_error_no_phone_number_supplied">Call not sent, no valid number entered.</string>
+    <string name="outgoing_call_error_no_phone_number_supplied">To place a call, enter a valid number.</string>
 
     <!-- Message shown when the user tries to make a video call when already in a video call. -->
     <string name ="duplicate_video_call_not_allowed">Call cannot be added at this time.</string>