This is a brief discussion of loop current errors reported in RightFax and the general logic behind resolving these types of conditions.
There are several errors relating to "Loop Current" in Rightfax and we are going to discuss what this means to a RightFax administrator.
Traditionally, loop current refers to the analog loop current that changes when a telephone handset is picked up, or a fax machine attempts to signal a line to transmit a fax.
From time to time you may see these errors in the FaxUtil interface and fax history, and they will also be reported in the Windows application log from either the RightFax Boardserver module service, or more likely, the RightFax DocTransport module service.
The errors you will typically see are:
Loop current detected:
When RightFax attempts to go off-hook to send a fax, it finds that the phone is already off-hook. This can occur when two devices are sharing a phone line and attempt to use it at the same time. It might also be a fax board solution configuration error.
Loop current failed:
The fax board solution did detect current on the line, but did not detect a valid value for Loop Current.
Loop current not detected:
The fax board solution was looking for Loop Current before it attempted to dial the fax number, but didnt find any.
Loop current dropped: Loop current has dropped off unexpectedly while in the process of handling a fax transmission.
Bear in mind that these concepts still hold true for T1 and FOIP telephony just the same as in the analog world.
No matter what the actual error, The key point to remember with loop current errors in RightFax is that at the most basic level, loop current equates to signalling.
More specifically, the signalling between the fax board solution and the communication channel it should be using to communicate to the gateway or network segment it is directly connected to;
failures can occur beyond this point, however the fax board solution, and per force, RightFax are only aware of and can only report on what is happening on this segment of the call transmission.
So from a Fax Server administrator perspective, troubleshooting problems with loop current errors typically start at the faxboard solution's configuration, and move out toward the telephony network and beyond from there.
Please check back for more videos covering the many facets of the RightFax software. RightFax University library is a work under continual progress and we will be updating often.
This is Jay Campbell with The Fax Guys for RightFax University saying thank you for watching.