Understanding Call Waiting Flow on IP Phones

"Enhance Communication Efficiency with Call Waiting Feature"

Description

The Call Waiting feature allows the users to answer another call while they are already on an active call. Primarily used in business phone systems, this feature enhances employee efficiency and improves customer experience. In short, the call waiting feature allows for two active call lines on a single IP phone, providing call agents with greater flexibility in delivering their services.

Configuration

The Call Waiting parameters can be configured on the IP Phones Web Interface > Settings > Call Features.

  • Disable Call-Waiting

When “Disable Call Waiting” is set to “Yes” and if you receive a second call while on an active call, the second caller will hear a busy message “The person on extension is on the phone. Please call again or leave a message,” indicating that the line is currently in use.

If “Disable Call-Waiting” is set to “No” the second call notification will appear on the LCD screen.

  • Disable Call-Waiting Tone

When a person is on a call and receives a second call simultaneously, they can choose to disable the ‘beep’ tone by setting “Disable Call-Waiting Tone” to “Yes“.

Figure 1 shows the second call notification pop-up when you set No to Disable Call Waiting
Figure 2 shows the Call Waiting parameters configuration page on the GXP21XX Web Interface.

Call Flow

The figure below shows the call flow when phone 100 receives a second call from phone 101 while he is on a call with phone 100, assuming the ‘Call Waiting’ feature is enabled.

Figure 3 shows the SIP messages in the call flow when the Call Waiting feature is enabled.