18 • T1/E1 Link
! "#
130
2)6 3
Line Status (dsx1LineStatus)
This variable indicates interface line status. It contains loopback, failure, received alarm and transmitted alarm
information. If any condition other than
exists, you can click on the
link to view
the
window (see figure 46).
$ ,<?' ( (
The alarms currently present on the line will be indicated by the
!&;
label next to the alarm type.
Failure States
The following failure states are reported in the dsx1LineStatus object. The items listed in this section comprise
those contained in RFC 1406—Definitions of Managed Objects for the DS1 and E1 Interface Types.
,
Far End Alarm failure is also known as a Yellow Alarm in the T1 case or Distant Alarm in the E1 case.
For D4 links, the Far End Alarm failure occurs when bit 6 of all channels has been zero for at least 335 ms. The
alarm is cleared when bit 6 of at least one channel is non-zero for a period T, where T is usually less than 1 sec-
ond and always less than 5 seconds. The Far End Alarm failure is not declared for D4 links when a Loss of Sig-
nal is detected.
For ESF links, the Far End Alarm failure is declared if the Yellow Alarm signal pattern occurs in at least 7 out of
10 contiguous 16-bit pattern intervals. The alarm is cleared when the Yellow Alarm signal pattern has not
occurred for 10 contiguous 16-bit signal pattern intervals.
For E1 links, the Far End Alarm failure is declared when bit 3 of time-slot zero is received set to 1 on two con-
secutive occasions. The Far End Alarm failure is cleared when bit 3 of time-slot zero is received set to zero.
Содержание 3092
Страница 18: ...About this guide 16...
Страница 22: ...1 Introduction 20 8 4 9...
Страница 44: ...5 DS0 Mapping 42 C 4...
Страница 48: ...6 Clocking 46...
Страница 56: ...7 iDSL Port Configuration 54...
Страница 66: ...9 Filter IP 64...
Страница 89: ...2 3 87 12 TCP finWait1 6 finWait2 7 closeWait 8 lastAck 9 closing 10 timeWait 11 deleteTCB 12...
Страница 90: ...12 TCP 88 2 3...
Страница 94: ...13 UDP 92...
Страница 100: ...14 RIP Version 2 98 7 2 3...
Страница 106: ...15 SNMP 104...
Страница 118: ...16 System 116 D 4 1...
Страница 148: ...18 T1 E1 Link 146 D...
Страница 152: ...19 T1 E1 Assignment 150 68 6...
Страница 153: ...151 7CAbout About About About Chapter contents Introduction 152 Patton Electronics Company contact information 152...
Страница 158: ...21 License 156...
Страница 162: ...A RJ 21X Wiring Color Chart 160...