Exam Code: 070-638
Exam Name: TS:MS Office Communications Server 2007, Configuring
Certification Provider: Microsoft
Corresponding Certification: MCTS

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Updated: Sep 18, 2026

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Microsoft 070-638 Exam Overview:

Certification Vendor:	Microsoft
Exam Name:	TS: Microsoft Office Communications Server 2007, Configuring
Exam Number:	70-638
Available Languages:	English
Related Certifications:	Microsoft Office Communications Server 2007 Microsoft Certified Technology Specialist (MCTS)
Certificate Validity Period:	Retired (no longer offered; certification legacy status)
Exam Price:	Varies by region (historically ~USD 125)
Real Exam Qty:	Approximately 40-60
Exam Duration:	120 minutes
Passing Score:	700 (on a 1000-point scale)
Exam Format:	Case studies, Scenario-based questions, Multiple choice
Recommended Training:	Microsoft Office Communications Server 2007 Documentation Microsoft Learn Training Platform
Exam Registration:	Pearson VUE Exam Registration Microsoft Certification (Legacy / Archive)
Sample Questions:	Microsoft 070-638 Sample Questions
Exam Way:	Delivered via Pearson VUE testing centers or online proctored exam (historically).
Pre Condition:	No formal prerequisite, but experience with Windows Server and Active Directory is recommended.
Official Syllabus URL:	https://learn.microsoft.com/en-us/

Microsoft 070-638 Exam Syllabus Topics:

Section	Objectives
Topic 1: Configure Federation and External Access	- Public IM connectivity - Edge server configuration and security - Federation with external organizations
Topic 2: Monitoring, Maintenance, and Troubleshooting	- Performance and connectivity troubleshooting - Logging and monitoring tools
Topic 3: Configure Instant Messaging and Presence	- User provisioning and client access - Presence policies and address book services
Topic 4: Configure Enterprise Voice and Telephony Integration	- Dial plans and normalization rules - Voice routing and mediation server configuration
Topic 5: Manage Security and Compliance	- Authentication and certificates - TLS/SIP security configuration
Topic 6: Deploy and Configure Microsoft Office Communications Server 2007	- Install and configure server components - Configure domain and forest requirements - Plan OCS 2007 topology and server roles

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