Mitel MiVOICE BUSINESS, Engineering Manualline

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Emergency Services
131
EMERGENCY SERVICES
Emergency services such as 911 are available from most phone devices according to how the
class of service and restrictions for the phone are set. The default is to enable 911 emergency
service access.
Currently, the following devices do not fully support Enhanced 911 (E911) operation:
• Hot Desk users
• IP consoles
• Teleworker Solution users
• MiCollab Client and MiCollab Client Softphone users
• Any other mobile IP phones or phones that are carried from location to location.
LOCATION INFORMATION
MiVoice IP Phones report network connectivity information. This information can be used to
provide location information to the Emergency Services database. When an IP phone is moved
to a new physical location the phone reports the new location information to the ICP and the
CESID directory is automatically updated.
IP phone move detection is accomplished by analyzing data reported from the Spanning Tree
Protocol/Rapid Spanning Tree Protocol or the Cisco Discovery Protocol.
NETWORK CONFIGURATION
E911 support and Location Change Indication is provided in the IP network by identifying the
L2 port MAC address to which the IP phone is connected and cross-referencing it to a physical
location stored in the Emergency Responder database.
The IP phones determine the MAC addresses of the L2 ports to which they are connected by
using Spanning Tree Protocol (STP)/Rapid Spanning Tree Protocol (RSTP), or Cisco Discovery
Notes:
1. Emergency call routing in a Teleworker environment is supported provided specific
conditions are met. For details see “Teleworker devices” on page 133.
2. For mobile phones (which do not fully support E911 operation) it is necessary to
keep the system administrator informed and the location database current when the
phone is moved if emergency services are required.
3. Subsequent to UCA Server Release 4.0, all
MiCollab Client
clients and
MiCollab Client
Softphones will work exclusively through the
MiCollab Client
Server to establish calls.
This will enhance operation of applications on the server and reduce information
transfer and loading on the ICP. This configuration does not provide resiliency
operation for the
MiCollab Client
and
MiCollab Client
Softphone. Therefore, if resilient
operation is required it is recommended that hard physical phones be used in parallel
with a
MiCollab Client
. When
MiCollab Client
Softphones are used in a system, steps
should be taken to ensure that there is adequate access to devices that can still
establish external emergency calls. Follow local country or administration guidelines
for percentage of phones that require external access.