Tx Rx Snr Cable Modem

Cable signal levels for all docsis cable modems require to be within the acceptable level for the modem operate properly.

Tx rx snr cable modem.

Typically cable modems show the downstream snr the upsteram snr can only be calculated at the remote end of the coax usually at the node. Downstream rx receive power level. Rf mac mac address of the cable rf interface. Are the tx rx and lan cables connected to the idirect modem.

This ip address 40 77 167 235 has been blocked for unusual usage patterns. When an s card is used and spectrum groups are assigned cnr is reported. If you can ping the modem then telnet into the modem check the rx snr value along with arp table to check if lan is connected to the idirect modem. The best way to determine if there are any problems with the cable signal levels that could affect the modems connectivity is to view the cable modem s signal power levels by accessing an interior screen.

Check the led status at front panel of the idirect modem with the technician rx tx net. Just remember that higher snr means cleaner signal. System uptime cable modem s internal time counter time since last power up or reset. Cable modem signal levels for voip to work consistently well the connection to the cable modem should be stable and within certain signal db parameters.

A value well over 40 may mean you have too much power. Ideally the rx level should be in the range of 18 to 25 dbm. The three signal levels that need to be within the acceptable level are downstream power snr signal to noise ratio and upstream power. The rx level is the power in dbm of the received signal.

This is the amount of signal received by the modem from the transmitter in the cable company head end. For all modems docsis 3 0 3 1. If the rx level is under 25 dbm the signal to noise ratio snr is. Ip address ip address assigned to the modem not the cpe.

Description how the cable modem identifies itself when queried for system sysdescr. Dns name dns name for the cable modem not the dynamic dns name for the cpe. Downstream power refers to the line signal sent from the cable provider to cable modem. Try to ping the modem remotely.