A single page fax takes (on average) approximately one minute to be transferred. This would include handshaking, negotiating, fax transmission and disconnecting. As an example, we will consider a company who needs to send 1000 faxes and receive 1000 faxes during an 8 hour working day.
Taking the average amount of time in which a fax can be transmitted as mentioned above, we can conclude that:
- 60 faxes can be sent in an hour
- 480 faxes can be sent in 8 hour day
Using the same calculation, we can conclude that:
- 60 faxes can be received in an hour
- 480 faxes can be received in 8 hour day
However this assumes that all faxes are being received exactly after each other. In reality this does not occur, since you cannot queue incoming faxes, and you will be receiving multiple faxes at the same time. Because of this, you should multiply the amount of lines required by 3. This will avoid that fax senders get a busy tone.
Therefore in order to receive 1000 faxes within 8 hours, 6.25 fax lines are required.
Number of lines required:
For this example we have concluded that the company required 2.08 lines for sending and 6.25 lines receiving, which rounds the total requirement to 8 fax lines.
The following variables will affect the speed which is used to send or receive a fax:
- Line speed
- Size of fax
- Is the line ISDN or Analog
- Speed of sending and receiving fax machines / fax cards / modems. The fax is always transmitted at the speed of the slowest device.
- Fax resolution