DrRez: Microsoft Lync Server Technical Reference Hub

Companies that allow employees to sign in to Office Communications Server remotely from the Internet can be susceptible to denial-of-service (DoS) and brute-force attacks. These kinds of attacks involve guessing users' passwords or locking users out of their accounts when too many incorrect password attempts are made to a valid Active Directory user account when password policy is enforced. Although internal security is not compromised, these types of attacks are disruptive to users and use up internal...

If you're looking for a solution that enables you to connect your Office Communications Server infrastructure to the PSTN, you will want to consider configuring a SIP Trunk. A SIP trunk configuration is a great way to go if you don't already have an IP/PBX. Author : Rui Maximo , Mike Wood (ThinkTel) Publication date : March 9, 2010 Product version : Microsoft Office Communications Server 2007 R2 If you're looking for a solution that enables you to connect your Office Communications Server...

Using the integrated voice features in Communications Server 2007 R2 for external telephone calls adds efficiency and call controls when using Office Communicator. However, enabling Enterprise Voice within Communications Server 2007 R2 can be a daunting task. Using a SIP trunk by Broadvox and the following configuration steps makes the process easier and less costly. Author: Brian R. Ricks Original publication date: February 2010 Product version: Office Communications Server 2007 R2 ...

A SIP trunk is a direct connection between your organization and an ITSP. It enables you to extend VoIP telephony beyond your organization's firewall without the need for an IP-PSTN gateway. Additionally, SIP trunks can carry instant messages, multimedia conferences, user presence information, Enhanced 9-1-1 (E9-1-1) emergency calls, and other SIP-based, real-time communications services. Because it is easier to configure and less expensive to design, operate, maintain, and upgrade, and because ITSPs...

If you're looking for an introduction about how to configure Cisco Unified Communications Manager (CUCM) version 6.1.2 with Office Communications Server 2007 R2, this article will help you. The proper way to connect and interoperate the two products is to set up a Direct SIP connection in Office Communications Server. On the Cisco side, this is referred to as a SIP trunk. This article covers how to configure a SIP trunk in CUCM. Authors: Jerome Berniere , Rui Maximo Original publication date...

This article is a partner article to "Direct SIP: Cisco Unified Communications Manager 6.1" and focuses on the configuration requirements for the Mediation Server in Office Communications Server 2007 R2. The main steps include configuring CUCM as the Mediation Server's gateway and modifying Mediation Server's location profile, but you'll want to read on to get the details. Author: Jerome Berniere , Rui Maximo Original Publication date: December 2009 Product version: Office Communications...