5
Telephone Headset – 2.5mm Jack
The additional 2.5mm jack facilitates connection of two-way communication devices
such as cellular phones to a Soundweb London device. This gives the end user the
advantage of having an alternate communication path to the outside world, which is
particularly useful as a backup to the main phone system. See Figure 3 for the BLU-HIF
internal wiring diagram.
Caution
: Before connecting to the 2.5mm jack, ensure that the internal jumper is set to
the appropriate position. Do not connect to both Telephone Headset jacks (RJ-22 and
2.5mm) on the BLU-HIF simultaneously. Doing so risks damaging the connected devices.
By default, the BLU-HIF ships with the jumper set to the Telephone Headset RJ-22 jack
position. See Figure 5 for an internal jumper configuration diagram.
Diagrams
Figure 1: Using the BLU-HIF with a VoIP/Digital Telephone
Figure 2: Using the BLU-HIF with a Phone Equipped with a 2.5mm TRS Jack
Figure 3: Wiring Diagram – BLU-HIF Telephone Headset Jacks
