LDAP attributes and detail display

[steve001]

I have an LDAP directory that uses OpenLDAP. Here is sample user:

dn: cn=Ann Smith,ou=people,dc=wf
sn: Smith
givenName: Ann
objectClass: person
objectClass: inetOrgPerson
cn: Ann Smith
homePhone: 01463864255
mobile: 07987555695
telephoneNumber: 07968730259

When I do an LDAP search from my phone I expect to see 1 record for Ann Smith containing 3 different telephone numbers. Instead I see 3 separate records for Ann Smith. Each has one of the above phone numbers labelled as "Office"

There seems to be no way of mapping the attributes in my database to the attributes yealink expects for the Office, Mobile and Other phone types. If there is no way to do such a mapping I am able to change the attribute names used in my database but need to know to what they need to be changed.

What attributes names should I use?