User's Manual 324 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
• 'Proxy Address': Configure the address (FQDN or IP address).
• 'Transport Type': TLS
4. Configure an IP Group to represent the Skype for Business Server (see Configuring IP
Groups on page 365). Make sure that you assign it with the Proxy Set that you configured in
Step 3 (above).
5. Assign the IP Group of the Skype for Business Server as the destination (presence gateway)
to where the device must send the PUBLISH messages: open the SIP Definitions General
Settings page (Setup menu > Signaling & Media tab > SIP Definitions folder > SIP
Definitions General Settings), and then in the 'Presence Publish IP Group ID' field, enter
the IP Group ID of the Skype for Business Server that you configured in Step 4 (above):
Figure 15-64: Assigning IP Group of Presence Gateway
6. Configure the Skype for Business LDAP server (Active Directory) to query for the Skype for
Business users' SIP URIs (see Configuring LDAP Servers on page 258).
7. Configure Call Setup Rules to perform LDAP queries in the Microsoft Active Directory for the
SIP URI of the caller (source) and called (destination) parties (see Configuring Call Setup
Rules on page 404). The device first needs to search the AD for the caller or called number
of the third-party endpoint device. For example, to search for a called mobile number, the
searched LDAP Attribute would be "mobile" set to the value of the destination number (e.g.,
'mobile=+' + param.call.dst.user). If the entry exists, the query searches for the Attribute
(e.g., ipPhone) where the SIP URI is defined for the corresponding mobile user. If found, the
query returns the Attribute's value (i.e., URI) to the device (instructed using the special
'Condition' string "presence.dst" or "presence.src"). This is the URI that the device uses as
the Request-URI in the PUBLISH message that it sends to the Skype for Business Server.
The configuration of the example used in this step is shown below:
Parameter Rule 1 Rule 2
Query Type
LDAP LDAP
Search Key 'mobile=+' + param.call.dst.user 'mobile=+' + param.call.src.user
Attributes To Get ipPhone ipPhone
Condition ldap.attr.ipPhone exists
ldap.attr.ipPhone exists
Action Subject presence.dst presence.src
Action Type
Add Add
Action Value ldap.attr.ipPhone ldap.attr.ipPhone
8. Configure routing rules to route the calls in the network.
9. For SBC calls: Configure IP Groups to represent your call party entities, and assign them the
group of Call Setup Rules (Set ID) that you configured in Step 7 (above). For Gateway calls:
Assign the group of Call Setup Rules (Set ID) that you configured in Step 7 (above) to your
Tel-to-IP Routing rules (see Configuring Tel-to-IP Routing Rules on page 525).
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