Installation guide

29
TM508/TM512 Installation Guide Release 5 Standard 1.2 Mar 2007
Patterns: Startup Sequence
The following tables show LED patterns for the Telephony Modem
during each phase of the startup sequence.
MTA Startup Sequence
If the MTA fails to complete registration, note the LED pattern and call
your next level of support.
CM Startup Sequence
If the modem fails to complete registration, note the LED pattern and
call your cable operator for assistance.
Telemetry Block The telemetry block provides an interface between the local power sup-
ply unit (LPSU) status signals and the network management facility.
See “Telemetry Block Pinouts” on page 8 for pinouts and alarm infor-
mation.
Serial Port Reserved for future use.
Step Description
Power,
DS, US,
Online
Link Telephone
0No Power Off Off Off
1Self-Test Flash Flash Flash
2-4
CM Initialization; see “
CM Startup
Sequence
” below.
Off Off
5 Telephony DHCP On On Flash
6 Telephony SNMP/TFTP On On Off
7 Telephony RSIP On On Flash
MTA Normal Operation
Step Description DS US Online Link
2 Downstream scan/sync Flash Off Off Off
3 Upstream ranging On Flash Off Off
4 DOCSIS DHCP/TFTP On On Flash Off
CM Normal Operation