Version 6.8 219 Mediant 2600 E-SBC
User's Manual 15. Services
4. Mobile number: If the Lync client (or Mediation Server) is unavailable (e.g., SIP
response 404 "Not Found" upon INVITE sent to Lync client), and the PBX / IP
PBX is also unavailable, the device routes the call to the user's mobile number (if
exists in the AD).
5. Alternative route: If the call routing to all the above fails (e.g., due to unavailable
destination - call busy), the device can route the call to an alternative destination
if an alternative routing rule is configured.
6. "Redundant" route: If the query failed (i.e., no attribute found in the AD), the
device uses the routing rule matching the "LDAP_ERR" prefix destination number
value.
The flowchart below summarizes the device's process for querying the AD and routing the
call based on the query results:
Figure 15-27: LDAP Query Flowchart