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Microsoft
Blog, Microsoft
What NOT TO DO when migrating voice from Cisco Call Manager to Microsoft Teams PhoneÂ
October 6, 2025
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TL;DR: What You’ll Learn About Migrating Voice to Teams
Mistake 1: Treating Provisioning as an AfterthoughtÂ
Mistake 2: Underestimating Cisco–Teams Coexistence
Mistake 3: Ignoring Lifecycle Management After Cutover
Mistake 4: Treating PSTN Carrier Selection as a Technical DetailÂ
Conclusion: Set Yourself Up for Success
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