CM process registration

Product : CATV
Part Involved : CM Motorola SB5101
Summary: Checking levels of upstream path
Scenario : Ensure return commands to HeadEnd
Company : ISP on Ecuador
Reference Date : September 2008.

The fordward (downstrean) is based on 256QAM and checking returns values through web tool monitoring CM levels, we can find next between modulation and SNR

QPSK 18dB
16QAM 21dB
64QAM 30dB
256QAM 33dB

Local ip address assigned for CM is 192.168.100.1 and ensure the RF cable is connected into CM before to turn it.

Remember that , CM has its HFC MAC (ID based on hexadecimal number) and MTA MAC is the ID assigned to MTA (HFC MAC + 2), here I add some terms related to this issue :

- After the begin ranging process (CM and CMTS confirm power level and what time should synchronize, calculate delay of the link, search the CMTS's slot and set up the schedule list). CM registered with CMTS.

- MTA send a "DHCP discovery"

- DHCP Send MTA an IP address, provisioning mode, MTA TFTP filename and other information in the DHCP options

- MTA asks DNS to resolve Provisioning Server FQDN

- DNS responds with IP address of Provisioning Server

- MTA requests its Configuration File from TFTP Server

- TFTP responds with Telephony Configuration File

- MTA sends Sys Log notification of provisioning complete (optional)

- MTA sends SNMP NOTIFY of provisioning complete to Provisioning Server (optional)