AudioCodes Mediant 500 MSBR User Manual Download

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User's Manual

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Document #: LTRT-10375

Mediant 500 MSBR

18.3.11 Enabling LDAP Searches for Numbers with Characters

Typically, the device performs LDAP searches in the AD for complete numbers where the
digits are adjacent to one another (e.g., 5038234567). However, if the number is defined in
the AD with characters (such as spaces, hyphens and periods) separating the digits (e.g.,
503-823 4567), the LDAP query returns a failed result.

To enable the device to search the AD for numbers that may contain characters between
its digits, you need to specify the Attribute (up to five) for which you want to apply this
functionality, using the LDAPNumericAttributes parameter. For example, the
telephoneNumber Attribute could be defined in AD with the telephone number "503-823-
4567" (i.e., hyphens), "503.823.4567" (i.e., periods) or "503 823 4567" (i.e., spaces). If the
device performs an LDAP search on this Attribute for the number 5038234567, the LDAP
query will return results only if you configure the LDAPNumericAttributes parameter with
the telephoneNumber Attribute (e.g., LDAPNumericAttributes=telephoneNumber). To
search for the number with characters, the device inserts the asterisk (*) wildcard between
all digits in the LDAP query (e.g., telephoneNumber = 5*0*3*8*2*3*4*5*6*7). As the AD
server recognizes the * wildcard as representing any character, it returns all possible
results to the device. Note that the wildcard represents only a character; a query result
containing a digit in place of a wildcard is discarded and the device performs another query
for the same Attribute. For example, it may return the numbers 533-823-4567 (second digit
"3" and hyphens) and 503-823-4567. As the device discards query results where the
wildcard results in a digit, it selects 503-823-4567 as the result. The correct query result is
cached by the device for subsequent queries and/or in case of LDAP server failure.

18.3.12 AD-based Routing for Microsoft Skype for Business

Typically, enterprises wishing to deploy the Microsoft® Skype for Business (formerly known
as Lync) are faced with a complex, call routing dial plan when migrating users from their
existing PBX or IP PBX to the Skype for Business platform. As more and more end-users
migrate to the new voice system, dialing plan management and PBX link capacity can be
adversely impacted. To resolve this issue, enterprises can employ Microsoft's Active
Directory (AD), which provides a central database to manage and maintain information
regarding user’s availability, presence, and location.

The device supports outbound IP call routing decisions based on information stored on the
AD. Based on queries sent to the AD, the device can route the call to one of the following
IP domains:



Skype for Business client - users connected to Skype for Business through the
Mediation Server



PBX or IP PBX - users not yet migrated to Skype for Business



Mobile - mobile number



Private - private telephone line for Skype for Business users (in addition to the primary
telephone line)

18.3.12.1

Querying the AD and Routing Priority

The device queries the AD using the initial destination number (i.e., called number). The
query can return up to four user phone numbers, each pertaining to one of the IP domains
(i.e., private number, Skype for Business number, PBX / IP PBX number, and mobile
number). The configuration parameters listed in the table below are used to configure the
query attribute keys that defines the AD attribute that you wish to query in the AD:

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