In the case of a toll call, the carrier prefixes "0" to the calling number before sending the number to the eSpace Desktop, so the eSpace Desktop cannot locate the prefixed number in the corporate directory.
Possbile reason：
The attendant group information is configured but the attendant information is not configured in the attendant group.
Solution :
1. Log in to the unified gateway in config mode as the admin user.
2. Run the show predeal command to view the number change indexes.
Check for the number change index which indicates that the first digit is deleted from a number. Details of the index are: ChangeType is set to DELETE, NumLen is set to 1, and ChangePos is set to 0.
If the index exists, copy the index number and go to Step 3.
If the index does not exist, run the config add predealindex indexno changetype Delete changepos 0 changelen 1 command to add one.
3. Run the config modify prefixdn 0 callcategory basic callattribute inter cldpredeal yes cldindex indexno command to set a number change rule for the intra-office prefix 0.
4. Run the save command to save the settings.
