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Emergency Transfer Relay (ETR)
The Emergency Transfer Relay (ETR) feature provides basic telephone services in the event of a power outage or a failed connection to Avaya Communication Manager. The ETR supports the connection of two external 808A ETR panels. Each 808A Emergency Transfer Panel provides emergency trunk bypass or
Contact closure
The contact closure feature is a controllable relay providing dry contacts for various applications. To implement the contact closure feature, connect an Avaya Partner Contact Closure Adjunct box to the CCA port on the G450 chassis. The adjunct box provides two contact closures that can be operated in either a “normally closed” or “normally open” state. The contact closures can control devices such as devices that automatically lock or unlock doors or voice recording units. The CCA port can be configured so that the connected devices can be controlled by an end device, such as a telephone. For example, a user can unlock a door by keying a sequence into a telephone keypad.
Fax, modem, TTY over IP
The G450 supports fax, modem, and TTY over IP.
LAN services
You can use the Avaya G450 Media Gateway as a LAN switch. You can also integrate the G450 into an existing LAN.
Physical media
The G450 provides LAN services through the fixed LAN ports on the chassis front panel for the connection of external LAN switches or local data devices. The LAN ports are connected to the internal LAN switch and support HP
VLANs
In the G450, you can configure VLANs on the fixed LAN ports.
The G450 supports up to 64 VLANs. The following VLAN features are supported:
●VLAN port grouping. Port VLANs can be used to group LAN ports into logical groups.
●Ingress VLAN Security. You configure a list of ingress VLANs on each port. Any packets tagged with an unlisted VLAN are dropped when received on the port.
●Class of Service (CoS) tagging. Packets are tagged with VLANs per CoS.
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Issue 6 January 2008 49
