Beginning Saturday, December 16, 2017, Cornell phone numbers will be shown on caller ID when calling off-campus numbers. This change is necessary to support the university’s new 911 system, launching January 8, 2018, to provide the necessary location information in emergencies.

In addition to supporting the 911 system, this change will also enable calls to go through to off-campus numbers that only accept calls that have caller ID shown. One example is the Concur Travel System help line, which was rejecting calls from Cornell numbers because the caller ID was unknown.

If you don’t want your phone number to be provided to the off-campus phone caller ID by default, and accept the risk of issues with emergency response, please contact Chemistry IT for assistance.

Caller ID display already exists for calls from one Cornell number to another. For these calls, the caller’s name and phone number are displayed. This will remain the same after the update. The change in caller ID will occur when calling off-campus numbers. In that case, the caller ID will only show the Cornell phone number, not the caller’s name.

Read more about this change at CIT’s website: https://it.cornell.edu/phones/caller-id-faq.