Emergency Responder - Manual Phone Identification

[C_Noble]

I am reviewing a customers Emergency Responder configuration.  The customer is forced to manual configure the phones in CER because another company runs their layer 2 services and they refuse to configure SNMP and some of the switches are not Cisco.

Additionally, there are many times when this customer uses a shared line on multiple phones and those phones reside in different Emergency Response Locations (ERLs).  CER does not allow you to manually add a duplicate line.

Is the only way to fix this issue to have a unique number on every phone? 

[Maren Mahoney · Accepted solution]

For the manual vs. automatic assignment of phones to ERLs, is there a reason that IP Subnets can't be used for assignment?

For shared lines: CER does not recognize shared lines unless the phone-specific information (such as switchport or IP) is included. The assumption when the system was designed was that Line 1 of all phones are unique and that Line 1 would be used to place emergency calls. Since manual phones are identified by the number, you are correct that you can't manually configure multiple phones with the same number.

Maren

[C_Noble]

Perfect thank you for the response.  I wanted a second set of eyes on this.

Unfortuantly the customer's room design isnt by subnet...