Cisco CISCO776 Installation Guide - Page 64

TWAIT Timer, Power-On Self-Test, Table 5-1, LED Error Messages continued, Test Result

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Power-On Self-Test Table 5-1 LED Error Messages (continued) RDY NT1 LINE CH1 CH2 Test Result On Blinks once a Off Off Off Internal NT1 is synchronized with the ISDN second switch, but is unable to synchronize with the ISDN terminal devices. Off Off On Off Off Waiting for software. On Off On On On Processor inactive. Off Off Off Off Off Off Off Processor self-test error. Off Off On EPROM1 checksum error. Off Off Off On Off RAM error. Off Off Off Off Off On On Flash memory error. On Off On HDLC2 packet chip error. Off Off On On Off Configuration port error. Off Off On On On ISDN interface chip error. 1 EPROM = erasable programmable read-only memory. 2 HDLC = High-Level Data Link Control. TWAIT Timer During initialization (power-up or reboot), with the switch type set to NI1, the following message displays: host> Please wait for TWAIT timer to expire in __ seconds host> Make a call to bypass this timer The timer value varies from 1 second to 5 minutes. Upon expiration of the time, the router requests a terminal endpoint identifier (TEI) and initiates SPID initialization as usual. If needed, either a voice or data call can be initiated instead of waiting for the timer to expire. This stops the timer immediately and allows initialization to continue. Note that the call will be successful unless the ISDN line has not been given enough time to rest before power-up or reboot. 5-2 Cisco 700 Series Router Installation Guide

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Power-On Self-Test
Cisco 700 Series Router Installation Guide
5-2
TWAIT Timer
During initialization (power-up or reboot), with the switch type set to NI1, the following
message displays:
host> Please wait for TWAIT timer to expire in __ seconds
host> Make a call to bypass this timer
The timer value varies from 1 second to 5 minutes. Upon expiration of the time, the router
requests a terminal endpoint identifier (TEI) and initiates SPID initialization as usual. If
needed, either a voice or data call can be initiated instead of waiting for the timer to expire.
This stops the timer immediately and allows initialization to continue.
Note that the call will be successful unless the ISDN line has not been given enough time
to
rest
before power-up or reboot.
On
Blinks once a
second
Off
Off
Off
Internal NT1 is synchronized with the ISDN
switch, but is unable to synchronize with the
ISDN terminal devices.
Off
Off
On
Off
Off
Waiting for software.
On
Off
On
On
On
Processor inactive.
Off
Off
Off
Off
Off
Processor self-test error.
Off
Off
Off
Off
On
EPROM
1
checksum error.
Off
Off
Off
On
Off
RAM error.
Off
Off
Off
On
On
Flash memory error.
Off
Off
On
Off
On
HDLC
2
packet chip error.
Off
Off
On
On
Off
Configuration port error.
Off
Off
On
On
On
ISDN interface chip error.
1
EPROM = erasable programmable read-only memory.
2
HDLC = High-Level Data Link Control.
Table 5-1
LED Error Messages (continued)
RDY
NT1
LINE
CH1
CH2
Test Result