The Easy On Hold music jukebox now contains special categories of hold music that may help with cell phone music on hold quality: The Simple category contains pieces with fewer instruments, or sparse instrumentation. There’s a variety of complexity offered, but in all the Simple category is a good place to start looking for good sounding hold
Birmingham Telecom have handledour transition from 30 year old analogue lines to VOIP/SIP 3CX phone system brilliantly.The pricing has been very competitive and their technical service is second to none. They are always on hand to guide us through and problems and answer the 'silly' questions we have had.I would Thoroughly recommend them to anyone. Need a Quote from us? Get in touch and receive a call back from one of our specialists within an hour …..

Our affordable pricing allows you to request several programs a month or year to compliment your outside promotions and marketing efforts or to promote seasonal items or services.
For those still using analogue or digital phone systems, voice on ISDN circuits has a bandwidth of around 4000Hz. The audio from an analogue phone is sampled at 8000Hz, and because of the nyquist theorem, must be low-pass filtered to 4000Hz. So any frequencies in the audio beyond 4000Hz are lost. Interestingly, the human ear and mind are good at recognising human speech, so this is considered "toll-quality" voice, i.e. good enough to pay for. This is the reason why certain vocalised letters are difficult or impossible to tell apart on the phone. For example, the differences between B, P, T, C, etc. are almost entirely above 4000Hz.