17-2
Axxius 800 - Release 2.2
Low Speed Protection Card
Overview
Overview
Low speed protection provides backup circuitry for any T1 service port on a Quad T1
service card or Quad DS1 ADPCM service card in the Axxius chassis. The Relay card
provides the physical connectivity between the “Protected” T1 service port and the
“Backup” T1 service port. Connectivity exists between the Service card and the Relay
card via the backplane pins only.
The service card slot that is configured for the “Backup card” is specified using CLI
commands. Additionally, the commands enable the user to specify what service card
(T1 or DS1 ADPCM) is to be protected and which port(s) on that card are to be
protected. In this manner, the protection card provides protection on an individual port
basis as opposed to a per card basis. Therefore protection is available for multiple cards
at the same time, as long as the port needing protection is not already being used by the
Backup card. For example if a Quad T1 card, slot 1, port 1 requires protection, the
Backup card port 1 is used to provide that protection. Ports 2-4 are still available for
protection on the remaining protected service cards.
A protected system can contain both T1 and DS1 ADPCM service cards. However, the
ADPCM mapping must be set the same on all cards in the protected system for Port #1
to be protected. Note: ports 2-4 are not effected by the ADPCM feature configuration.
See the following chart:
BACKUP CARD
PROTECTED CARD
T1 Service
Card
DS1 ADPCM Card
(ADPCM set to
"none")
DS1 ADPCM Card
(ADPCM set to "map1",
"map2" or "map3")
T1 Service Card
supported
supported
not supported
DS1 ADPCM Card
(ADPCM set to "none")
supported
supported
not supported
DS1 ADPCM Card
(ADPCM set to "map1",
"map2" or "map3")
not supported
not supported
supported
Summary of Contents for Network Device Axxius 800
Page 1: ...Axxius 800 USER MANUAL Part Number 770 0104 AG Product Release 2 2 May 2004 ...
Page 32: ...xxxii Axxius 800 Release 2 2 Table of Contents ...
Page 50: ...1 18 Axxius 800 Release 2 2 Base Platform ACO ...
Page 101: ...CHAPTER CLI Commands In this Chapter n Command Line Interface Help n CLI Commands ...
Page 392: ...8 8 Axxius 800 Release 2 2 FXO Voice Card Channel Associated Signaling CAS Conversions ...
Page 430: ...12 8 Axxius 800 Release 2 2 Power Supply Installing Replacing a Power Supply ...
Page 472: ...15 20 Axxius 800 Release 2 2 Terminal Server Router Card LEDs ...
Page 500: ...18 12 Axxius 800 Release 2 2 Maintenance Hot Swap Service Card ...
Page 532: ...C 22 Axxius 800 Release 2 2 Loopback Tests V 35 V 54 Loop ...
Page 552: ...Glossary 20 Axxius 800 Release 2 2 Glossary ...