Patent ID: 11966313
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 18:
19. A non-transitory computer-readable storage medium storing a computer program which, when executed by a processor causes the processor to perform a method for initiating issuance of control signals to a telecommunications apparatus,
the apparatus comprising:
a plurality of light sources, an illumination state of the light sources being controllable according to control signals;
circuitry connected to the plurality of light sources, the circuity being configured to provide electrical power, and control signals to the light sources; and
a plug connected to the circuitry, the plug being configured to connect to an external port of a first telecommunications device, and configured as an interface for electrical power from the first telecommunications device to the circuitry, and for control signals from the first telecommunications device to the circuitry;
the plurality of light sources are arranged such that a change in illumination state of the plurality of light sources provides a visual indication on a subject telecommunications device, the subject telecommunications device being a second telecommunications device, separate from the first telecommunications device, the second telecommunications device being a passive telecommunications device that is not supplied with electrical power;

the method comprising:
initiating issuance of control signals to the plurality of light sources, via the plug, which correspond to an indication, by the plurality of light sources, relating to the subject telecommunications device.