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1. About the FrameSaver SLV
9128-A2-GB20-80 September 2002
1-9
— When the SLV Sample Interval is set to 10 seconds, provides advance
detection of network problems before a DLCI Down indication is received,
to minimize data loss.
— Provides customer premises equipment (CPE) with a Backward Explicit
Congestion Notification (BECN) when backup bandwidth is not sufficient
for the traffic, allowing the CPE time to slow traffic to the ISDN before the
network starts discarding data.
— Supports Frame Relay Forum Multilink Frame Relay Implementation
Agreement – FRF.15 so backup bandwidth can be increased by
aggregating multiple B-channels over the ISDN link.
— Supports collection of call and call attempt statistical information that can
be viewed from the menu-driven user interface or via SNMP, and supports
alarm generation and call security, as well.
— Provides test call capability on ISDN backup links so ISDN and DBM
function can be verified before there is an actual primary link failure and
switched over to the backup link. Periodic tests are recommended, which
can be performed from the menu-driven user interface, or through SNMP
commands. Multiple Last Cause Values are also provided to assist in
troubleshooting ISDN problems.
Additional FrameSaver SLV 9126-II and 9128-II Features
Ethernet Interface.
FrameSaver SLV 9126-II Routers and 9126-II and 9128-II
CSU/DSUs units have a 10/100 BaseT Ethernet LAN interface for
management, with automatic sensing of the operation rate of 10 Mb or
100 Mb, conforming to ANSI/IEEE 802.3.
Additional FrameSaver SLV 9128-II Features
The following features are unique to FrameSaver SLV 9128-II units:
Multiple Data Ports.
Provides two data ports instead of one, which have
standard connectors so no special-order cables are required.
Carrier-Mounted Models.
For customers with high-density requirements,
FrameSaver SLV 9128s and 9128-IIs can be ordered as multislot units, called
Network Access Modules (NAMs), for insertion in the 14-slot 9000 Series
Access Carrier.