3Com V7000 - Manual (Page 79)

Emergency Phone Number Dialing Service 79
hunt group list (same effect as pressing Feature + 972) to display the
hunt group list.
You can also use the VCX User Interface to view the hunt groups you
belong to and your current login status for each group.
If a hunt group member has a remote phone, that remote phone will not
appear in the VCX User Interface Hunt Group Membership list, but it does
appear in the administrator’s Hunt Group Membership list.
Emergency Phone
Number Dialing
Service VCX phones provide the capability to dial an emergency phone number
even when the phone is not logged in to a VCX system. The phone must
be properly configured, connected to an operational VCX system, and the
region must support this service. If the VCX system is not operational, an
emergency call can be routed (optionally) directly through a PSTN media
gateway. Contact your system administrator to determine the appropriate
emergency number for your region.