User's Manual 268 Document #: LTRT-89730
Mediant 3000
• "LDAP_ERR": used to match a routing rule based on a failed query result when
no attribute is found in the AD
Note: These prefixes are involved only in the routing and manipulation processes;
they are not used as the final destination number.
7. The device uses the Tel-to-IP Routing table to route the call based on the LDAP query
result. The device routes the call according to the following priority:
1. Private line: If the query is done for the private attribute and it's found, the device
routes the call according to this attribute.
2. Mediation Server SIP address (Lync): If the private attribute does not exist or is
not queried, the device routes the call to the Mediation Server (which then routes
the call to the Lync client).
3. PBX / IP PBX: If the Lync client is not found in the AD, it routes the call to the
PBX / IP PBX.
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.
Note: For Enterprises implementing a PBX / IP PBX system, but yet to migrate to
Lync Server, if the PBX / IP PBX system is unavailable or has failed, the device uses
the AD query result for the user’s mobile phone number, routing the call through the
PSTN to the mobile destination.
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