ZyXEL Communications MSAP2000 manual Virtual Channels, Pmm, Sra

MSAP2000 AAMS User’s Guide

The following table describes the fields in this screen.

Table 16 xDSL Port Setting

LABEL	DESCRIPTION
Last Page	Click this to return to the previous screen.
Active	Select this check box to turn on this ADSL port.
Customer Info	Enter information to identify the subscriber connected to this ADSL port. You
	can use up to 31 printable ASCII characters (including spaces and hyphens).
Customer Tel	Enter information to identify the telephone number of the subscriber
	connected to this ADSL port. You can use up to 15 ASCII characters
	(including spaces and hyphens).
Profile	Select a profile of ADSL settings (such as the transfer rate, interleave delay
	and signal to noise ratio settings) to assign to this port. Use the Port Profile
	screen to configure port profiles.
Mode	Select the port’s ADSL operational mode. Select the mode that the subscriber’s
	device uses or auto to have MSAP2000 AAMS automatically determine the
	mode to use. See Table 14 on page 83 for information on the individual ADSL
	modes.
Alarm Profile	The alarm profile defines thresholds that trigger an alarm when exceeded. IGMP
Filter Profile	The IGMP filter profile defines which multicast groups a port can join. Select a
	profile of IGMP filter settings to assign to this port. Use the IGMP Filter Profile
	screen to configure IGMP filter profiles (see Table 51 on page 103).
ADSL2/2+ feature	These are features available with ADSL2/2+. The subscriber’s ADSL device
	must also support the individual features in order to use them. At the time of
	writing these features have not been fully tested and their performance and
	interoperability cannot be guaranteed.
Annex L	Enable the Annex L feature to use reach extended ADSL2. This allows increased
	ADSL2 connection distances.
PMM	Enable the Power ManageMent (PMM) feature to reduce the amount of
	power used overall and reduces the instances of the connection going
	down. PMM increases or decreases the transmission power based on line
	conditions. PMM also decreases the number of service interruptions.
SRA	Enable Seamless Rate Adaptation (SRA) to automatically adjust the connection’s
	data rate according to line conditions without interrupting service.
Apply	Click Apply to save your changes to the MSAP2000 AAMS’s volatile memory.
	The MSAP2000 AAMS loses these changes if it is turned off or loses power, so
	use the Config Save link on the navigation panel to save your changes to the
	non-volatile memory when you are done configuring.
Cancel	Click Cancel to begin configuring the fields again.

7.8 Virtual Channels

Defining virtual channels (also called Permanent Virtual Circuits or PVCs) allows you to set priorities for different services or subscribers. You can define up to eight channels on each DSL port and use them for different services or levels of service. You set the PVID that is assigned to untagged frames received on each channel. You also set an IEEE 802.1p priority for each of the PVIDs. In this way you can assign different priorities to different channels (and consequently the services that get carried on them or the subscribers that use them).

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