Grandstream Networks GRP26 Series Administration Guide

The default setting is “Yes”.
Enable Call Waiting Tone
Enables Call Waiting alert tone when another incoming call is received while a call is in
progress.
Default setting is “Yes”.
Ring For Call Waiting
Configures the phone to ring instead of playing call waiting tone when handset or headset is
used.
The default setting is “No”.
Auto Answer Delay
Configure the delay for automatically answering the incoming call. Valid range is 0 to 10
(second). The default value is 0 (which means auto answer is disabled).
In Call
Enable in-call DTMF Display
Enables/disables the display of entered DTMF digits on the phone LCD during the call.
The default setting is “Yes”.
Enable Sending DTMF via specific
MPKs
Allows certain MPKs to send DTMF in-call. This option doesn’t affect Dial DTMF.
The default setting is “No”.
Show On Hold Duration
Show the duration of holding a call on the LCD.
The default setting is “Yes”.
Enable Auto Unmute
If the option is enabled, automatically unmute phone when an user unholds the call or
establishes a new call. The default setting is "No".
In-call Dial Number on Pressing
Transfer Key
Configures the number to be dialed as DTMF using TRANSFER button.
Enable Busy Tone on Remote
Disconnect
Enables the busy tone heard in the handset when call is disconnected remotely.
The default setting is “Yes”.
Transfer
Enable Transfer
Enables/disables transfer feature. If disabled, call transfer will not be possible.
Default setting is “Yes”.
Hold Call Before Completing Transfer
When set to "No", the phone will not hold the current call or the transfer target for an Attended
Transfer. The default setting is "Yes".
Attended Transfer Mode
If set to “Static”, attended transfers can only be performed with pre-established calls. If set to
“Dynamic”, attended transfers can be performed with pre-established calls OR be initiated
during the transfer process. This option does not affect the user’s ability to perform blind
transfers.
The default setting is “Dynamic”.
For more details about “Static” / “Dynamic” transfer, refer to the user guide.
DND
Enable DND Feature
If set to “No”, the user cannot turn on Do Not Disturb feature via MUTE key, MPK, or menu
on LCD.
The default setting is “Yes”.
Return Code When Enable DND When DND is enabled, the phone will send the selected type of SIP message. Available
options are:
● Busy (486).
● Temporarily Unavailable (480).

Grandstream Networks GRP26 Series Specifications

General

Brand	Grandstream Networks
Model	GRP26 Series
Category	IP Phone
Language	English