Refurbished Phone Exchange Blog

  The Plantronics CS series of wireless headset units are very popular due to their reliability, functionality, and styling.  The CS50 and CS55 are two of the most popular versions, but many customers often ask what the difference is between the two.  They look very similar, in fact the ear pieces looks identical.  Well, allow us to explain the differences and answer all your questions.   At first glance, the main difference you will notice between the units is the size of the bases.  The CS50 is much taller than the CS55, however, both units have the same button and...

  Those deploying an ESI based IP phone system will need to decide on an IP phone to use. Two of the more commonly used IP phones are the ESI 48 Key IPFP and the ESI 48 Key IPFP2 phones. If these phones sound incredibly similar to you, it’s because they are. There are two differences any telecom engineer should be aware of before deploying the phones.   Do You Need Power Over Ethernet? The ESI IPFP 48 key does not come with the ability to accept Power Over Ethernet. If you are deploying a system that has a PoE...

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,...

  What is SIP?Session Initiation Protocol, commonly referred to as SIP, is a protocol commonly used in the voice over IP (VoIP) community. The session initiation protocol creates, maintains, and ends data transmission between two or more parties for an established data media stream of voice or video. What SIP does not do is transmit the media stream itself. SIP works in conjunction with another protocol such as real-time Transport Protocol (RTP) or Secure Real-time Transport Protocol (SRTP) to deliver the actual data. Why is SIP important?Why SIP is important is that SIP is the most common open standards protocol for establishing phone...

HP set the standard for network switch and router warranties. Their ProCurve switches and routers come with an industry first “lifetime warranty.” Many are skeptical of what a lifetime warranty is with Cisco’s stopping only a few years after a product is discontinued.   With HP Procurve equipment, the warranty is guaranteed for as long as you own the switch. This means that your HP 2610-24 Procurve will still be supported even 15 years from now. HP even offers next business day replacement to many countries. This lifetime warranty helps to make HP the smart choice. There are no hidden...