Digium TDM 4-FXO bundle - (surge protection)
Submitted by gardnersmith on Thu, 05/08/2008 - 10:27am.
Anybody out there using internal FXO card for PSTN connectivity and providing surge protection? I am using a 4xMCO surgegate passive device to protect the trunk ports on the card from potential lightning strikes coming in to the system through the POTS lines. It appears that now that I have that unit between the phone jacks and the TDM card, I am experiencing occasional dropped calls. Is anyone else seen this issue? I am wondering if it is possible that there are some tweaks on the digium card that I need to change now that the trunks are going through a surge protection device. Comments welcome.
We install surge supressors everywhere
Thu, 05/08/2008 - 12:32pm
We are using Polyphaser protectors that we wire right on the 66 block where the bridge clips go. They use Silicon Avalanche Diode technology. Part Number IS-6PTL They are expensive but well worth it.
Most are on DS-1 lines however I have two customers with TDM-400 cards without any trouble.
These are US POTS lines.
Scott
Member Since:
2007-11-24