Standards - HP 7102dl - ProCurve Secure Router Configuration Manual

Configuring Backup WAN Connections
Backing Up Primary WAN Connections
3-10
As Figure 3-2 shows, the backup module is installed over the data link module.
Figure 3-2. Installing a Backup Module
After the backup module is installed, it can back up any interface on the router,
not only those interfaces installed in the same slot. You can back up:
Point-to-Point Protocol (PPP) connections
High-level Data Link Control (HDLC) connections
Frame Relay connections
ISDN primary connections
Asymmetric Digital Subscriber Line (ADSL) connections
Internet connections (using any Data Link Layer protocol)

Standards

On the ProCurve Secure Router, both ISDN backup modules support the
following standards:
National ISDN-1—Defined in the mid 1990s by the National Institute of
Standards and Technology (NIS) and Bellcore (now called Telcordia),
National ISDN-1 specifies a common set of options that ISDN manufac-
turers and public carriers must provide.
Northern Telecom Digital Multiplex System (DMS)-100—DMS-100 is
another standard for transmitting voice and data over an ISDN line.
AT&T 5ESS—AT&T switches use Lucent signaling.