Alarm codeYELALM
Transmit Signal Loss means the ECS has stopped sending signals to the network or far end, and a yellow alarm is returned on the receive pair. The manual's first action is: “1. Do loopback from CSU to Smart Jack.”
- Model
- Iwatsu Enterprise-CS
- Display shows
- Transmit Signal Loss (YELALM)
- Type
- Alarm code
- Source
- Manual p. 1574
What YELALM means
Transmit Signal Loss p. 1574
Common causes
- The ECS has stopped sending signal towards network/far end, and they return a yellow alarm on the receive pair. p. 1574
- The ECS, the CSU and the Smart Jack all have alarm capability. p. 1574
What to do
- 1. Do loopback from CSU to Smart Jack. p. 1574
- Observing the location of active alarms will isolate the problem. p. 1574
Before you service the product, read the safety instructions in the manual p. 884.
If YELALM is still not resolved
- Contact service / dealer p. 868 “Do Not use extension cords to connect the AC power cord. This may cause system overloading and may make grounding unreliable”
- Contact service / dealer p. 884 “WARNING! When analog trunks are installed in the IX-CME Cabinet, the Field Ground terminal (on the back of the IX-CME) MUST be properly grounded.”
This page summarises what the manufacturer’s manual says about YELALM; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Iwatsu. Found a mistake? Report an error.