Refurbished Phone Exchange Blog — how-to

Installing a Dell EPS-470 extended power supply into your Dell PowerConnect switch is a breeze. The EPS-470 installs through a simple power cord and connecting power cable. The power cable runs from the back of the EPS-470 into the power port in your Dell PowerConnect 3448P or 3548P. Below are photos of the power ports on the EPS-470 and Dell PowerConnect 3548P. They show where the connecting cables install.   In addition to being able to install EPS-470 power supplies through this port on PoE switches, the Dell 3524 and 3524 (non-PoE) can have a Dell RPS-600 power supply installed. If installed properly,...

  Many modern desk phones now include a feature called a navigation key. This technology can be rephrased several different ways including menu driven display, menu key, and navigation cluster. The important part of the navigation key is that it allows you to navigate options on business phones that did not exist even 10 years ago.   The navigation keys are usually combined with a menu button that allow a user or telecom engineer to program some of the phone’s options directly through the handset. This prevents having to use the command line interface or web GUI or the phone...

For those looking to connect room controllers to their Crestron AV2 control processors, there are two options available depending on what you as a customer requires. 8G DM cables and Cresfiber are the two main options for connecting DigialMedia components together.   8G DM Copper: 8G DM is a shielded twist pair Ethernet cable created by Crestron. The cable can come in Plenum or Non-plenum variations. The cables are designed for complete end to end Crestron solutions, but can be substituted for traditional cat 5e or cat 6 wiring. CresFiber: CresFiber, also called DM 8G Fiber is fiber optic cable...

  ESI phones come in several variations, more than most other phone system brands. Luckily, all ESI part numbers include their features right in the part number. This makes it easy for us to know what a phone can do. DFP vs. IPFP – The Big Difference The largest difference when it comes to the newer ESI phones is DFP vs IPFP. DFP stands for Digital Feature Phone. DFP phones run over traditional RJ-11 phone cords and are used with ESI digital line cards. These phones are powered through the phone system and feature more traditional phone programming and set...

So you received your refurbished Plantronics CS50 or CS55 headset. You set up your Plantronics CS50 correctly and you synchronized your CS50 base and headset unit successfully. You press the talk button on your headset to start a conversation, but you hear nothing. What gives!? The answer might be simpler than you think.   Located on the side of a Plantronics CS50 or CS55 is a small circular dial with a slot cut out for what looks like a flathead screwdriver (see the red arrow). That is a call tune adjuster, and it is likely your headset system is out of tune...