In order to get the most out of babblevoice, these quality guidelines may prove useful for you.
Deciding on whether to use call compression or not may be just trial and error for you. If you use it:
Using compression requires a lot of processing power at babblevoice - so it has become a premium product which has some costs. You can tailor these to suite your domain. So for example,
If you are unsure we would recommend you enable this feature. If you want to know more about it it - read on.
This can be a daunting subject but once a little time is spent on it, you will find it is very simple. Items you should consider:
To keep it simple, you need to know how many phone calls you need to make at any one time and what type of ‘compression’ you want to use.
Babblevoice offers 3 types of compression (otherwise known as CODEC):
Using PCMU/A is free on babblevoice, iLBC and G722 incurs additional fees. Now, very few offices have all their staff on the phones all of the time. Even in busy calls centres this may only be as high as 40-50% of staff on the phone.
As a basic rule of thumb, in a non-intensive office we would suggest a usage pattern of 20% - but you really must assess this yourselves.
By default, babblevoice will select HD (G722) if the phone supports it, followed by compressed (iLBC) followed by uncompressed (PCMA).
Uncompressed or HD: bandwidth required = 80Kb x number of users x usage ratio. Compressed: bandwidth required = 30Kb x ceiling(number of users x usage ratio).
Example, I have 12 members of staff. We are typically on the phone 20% of the time. We are using phones which are capable of using iLBC. 30Kb x 12 x 20% = 72Kb.
All commercial and domestic broadband offer slower up speeds than down speeds. Taking the figure you worked out above - 72Kb - this has to be smaller than the up speed of the broadband you order.