Planet GS-5220 Series User Manual page 468

Object
• Emergency Call
Service
Policies
Network Policy Discovery enables the efficient discovery and diagnosis of mismatch issues with the VLAN
configuration, along with the associated Layer 2 and Layer 3 attributes, which apply for a set of specific protocol
applications on that port. Improper network policy configurations are a very significant issue in VoIP
environments that frequently result in voice quality degradation or loss of service.
Policies are only intended for use with applications that have specific 'real-time' network policy requirements,
such as interactive voice and/or video services.
The network policy attributes advertised are:
1. Layer 2 VLAN ID (IEEE 802.1Q-2003)
2. Layer 2 priority value (IEEE 802.1D-2004)
3. Layer 3 Diffserv code point (DSCP) value (IETF RFC 2474)
This network policy is potentially advertised and associated with multiple sets of application types supported on
a given port. The application types specifically addressed are:
1. Voice
2. Guest Voice
Description
Emergency Call Service ELIN identifier data format is defined to carry
the ELIN identifier as used during emergency call setup to a traditional
CAMA or ISDN trunk-based PSAP. This format consists of a numerical
digit string, corresponding to the ELIN to be used for emergency calling.
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User's Manual of GS-5220 LCD Series