Book extract: Implementing Cisco Unified Communications Manager on multiple sites

This book extract offers detailed advice on how to operate Cisco's Unified Communications Manager across multiple sites.

This book extract from 'Implementing Cisco Unified Communications' explores issues involved in multisite deployments of Unified Communications Manager, including:

1. Multisite deployment challenge overview
2. Quality challenges
3. Bandwidth challenges
4. Availability challenges
5. Dial plan challenges
6. Overlapping and nonconsecutive numbers
7. Fixed versus variable-length numbering plans
8. Variable-length numbering, E.164 addressing and DID
9. Optimized call routing and PSTN backup
10. NAT and security issues

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