Send your customer a text message from your VoIP phone - learn how here
Instead of picking up the handset and dialing the number, leave the handset on the phone and dial your number. If you have any errors you can correct it on screen. When you have it right, just press Send or Dial and pick up the handset when your party answers.
IP phone will have a dial tone any time it gets power. Dial tone is no indication of service.
There are many factors that can contribute to performance issues on a PC, such as
It's easy to get overloaded with software applications needing frequent updates. You should make an effort to update the important and frequently used software when it needs. This will include your anti-virus and security programs, Microsoft Windows and Office, Adobe products, Java, and any software you use on a daily basis.
Severe weather can be very disruptive to radio signals, especially very high-frequency ones. Satellites that deliver data to homes use very high-frequency waves and quality can suffer in bad weather. Wireless, on the other hand, uses lower frequency waves than satellite and doesn’t need to travel more than a few miles. Because of the lower frequency, wireless is less likely to be affected by the weather.
“Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit. —Aristotle