# VoIP Configuration - Redundant Servers Both Registering To Cisco CM

**URL:** <https://forum.inductiveautomation.com/t/voip-configuration-redundant-servers-both-registering-to-cisco-cm/60467>\
**Category:** Ignition\
**Created:** [June 7, 2022, 7:06pm UTC](https://forum.inductiveautomation.com/t/voip-configuration-redundant-servers-both-registering-to-cisco-cm/60467 "2022-06-07T19:06:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rob.raffaele](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@rob.raffaele](https://forum.inductiveautomation.com/u/rob.raffaele)\
**Post date:** [June 7, 2022, 7:06pm UTC](https://forum.inductiveautomation.com/t/voip-configuration-redundant-servers-both-registering-to-cisco-cm/60467/1 "2022-06-07T19:06:25Z")

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I’m having an issue where my redundant pair of servers are both trying to register to Cisco CM. Cisco CM sees two distinct IP addresses trying to use the same account/username so they keep going in and out of a registered state in CM. I was able to put a network block up, so the backup server could not reach CM. This made the primary stable but is only a stopgap. How has anyone dealt with this?