Place a Call

You can do one of the following to start a call:

• Press the Call button to use the Dial screen to call a phone number or extension number.
  
• If there is a Missed Call notification, tap the Call icon to return their call.
  
• Tap the Contacts button to call someone using a contact you have created for them.
  
• Tap the History button to find a previous caller to speak with. 
  

The Dial Screen

On the Dial screen, you can dial someone's phone number or extension number to speak with them.

If you are calling multiple people, you can dial and select multiple numbers.

Once you dial someone's number, tap one of the following buttons to start a call:

• Create Conference - Start a conference call with the number dialed.
• Single Call - Place a 1-on-1 call to this number.

Answer a Call

When there is an incoming call for your phone, there are multiple ways to answer:

If you are already on a call, a Ringing… message will appear that shows the caller ID of the additional caller. You can press one of the following to answer the call:

• Tap then Answer option to accept the call as a 1-on-1 call. 
  
  

  ✔ Doing so will answer the call as a 1-on-1 call with normal call controls for handling the call.

  

   
• Tap then Join Conf option to start a conference call or add this caller into an existing conference call. 
   
  

  ✔ Doing so will answer the call as a conference call where you can tap the Add button to add more participants and use the call controls to handle the conference call.

  

   

If you do not want to answer the call, you can either… 

• Press the Reject button to dismiss the call.
  
• Press the No ringing option to have the call silently ring. 
  

Host Conference Calls

One of the main purposes for your conference phone will most likely be hosting conference calls. With a GAC2570, you can have up to 12 participants in a conference call together. 

There are three different ways you can start a new conference call.

Conference Call Controls

While hosting a conference call, there are different call control options you can use to manage the call. 

To view more of the different features you can use to handle an active conference call, tap the Down arrow above the End Call button.

Doing so will show five more features: Participants, Unlock/Lock, Call Details, Programmable Key, and New Call. 

Feature	Description
Participants	View the participants of your conference in a list along with controls for managing their participation in the call.
Unlock/Lock	Once a conference call has started, you can unlock/lock the call to allow/disallow more participants from joining.
Call Details	View different call quality metrics about the call, such as packet loss.
Programmable Key	Open the Programmable Keys menu to tap a BLF button you want to place a separate call to.
New Call	Start a separate call with someone outside of this conference call.

Manage Participants

When you tap a participant in the call, you will have options to use to manage that person's participation in the conference call.

• Mute: Mute this participant’s microphone. Muting a participant can be helpful if they are contributing to unnecessary background noise.
• Hold: Place a single participant on hold if needed.
• Remove: Kick or remove a participant from the conference call.

Talking 1-on-1

Once the person you are calling to answers your call, you will see features on the right that you can use to handle the call.

To view all of the different features you can use to handle an active call, tap the Down arrow above the End Call button.

Doing so will show four more features: Transfer, Call Details, Programmable Key, and New Call. 

Mute Yourself

At some points of a call, you may need to briefly stop talking with your caller. You can mute yourself using the Mute option. Doing so will mute your microphone so that the caller cannot hear you, but you can still hear them.

Once you are ready to begin talking again, tap Unmute. 

Hold and Resume Calls

You can place an active call on hold and resume the call when you are ready. When you place a call on hold, the caller will be listening to music until their call is resumed. 

Place a Call on Hold

While speaking with someone, you can place their call on hold by tapping the Hold button.

Any time you initiate an action (e.g., transferring or conferencing), the call you were on before will automatically be put on hold. 

Swap Between Held Calls

While handling multiple calls or starting a transfer, you may need to swap to another call. To swap between held calls…

1. Put the current caller on hold. 
   
2. Tap the Number of Calls button on the left to select a different held call.
   
3. Select the call you want to swap to from the list that appears. 
   
4. Tap the Unhold button to resume that call.
   

Resume a Call

If you are ready to begin speaking with a caller you placed on hold, you can resume that call by tapping the Unhold button.

Transfer a Call

While handling a call, it may be necessary to pass the phone call along to a user, call queue, or an external phone number. This can be done through transferring. 

While handling a call on your Grandstream conference phone, there are three different methods of transferring that can be utilized depending on how exactly the call needs to be transferred and handled:

1. Blind Transfer - Transfer a call directly to another person without talking to that second person.  This is method of transferring is also referred to as a “cold” or "unassisted" transfer.
2. Attended Transfer - Speak with the person being transferred to before completely transferring the call.  This method of transferring is also referred to as a “warm” or “assisted” transfer.
3. Voicemail Transfer - Transfer a caller directly to a general mailbox or the voicemailbox of another user.

Use the module below to view step-by-step instructions about how you can perform these different transfers:

Use the Keypad for Interacting with Menus

If you place calls to businesses with the conference phone, you may need to use a keypad to interact with a business' automated menu. To use a keypad for entering input:

1. Tap the Keypad option while on the call.
   
2. Use the keypad that appears as needed.