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PHONE SETUP:

Installing the phone (Wall Mount *sold separately):

1.  Attach the wall mount spacers to the slot for wall mount spacers on the back 

of the phone.

2. Attach the phone to the wall via the wall mount hole.

3. Pull out the tab from the handset cradle (See figure below).
4. Rotate the tab and plug it back into the slot with the extension up to hold the 

handset while the phone is mounted on the wall (See figure below).

   Tab with 

extension up

Handset Rest

Tab with

extension down

Slots for the  

wall mount 

spacers and 

phone stand 

For installing the phone on the table with the phone stand, attach the phone stand 

to the bottom of the phone where there is a slot for the phone stand. (Upper half, 

bottom part). 

Installing the phone (Phone Stand) :

Wall mount

Wall mount

Phone Stand

PC Port

Kensington Lock

LAN Port

Power

Headset Port          

Handset Port

To setup the GRP2603/GRP2603P, follow the steps below::

1.  Connect the handset and main phone case with the phone cord.
2. 

Connect the 5V DC output plug to the power jack on the phone; plug the pow

-

er adapter into an electrical outlet. If PoE switch is used in step 3 (GRP2603P 

only), this step could be skipped. 

3. 

Connect the LAN port of the phone to the RJ-45 socket of a hub/switch or a 

router (LAN side of the router) using the Ethernet cable.

4. 

The LCD will display Grandstream logo. Before continuing, please wait for the 

date/time display to show up. 

5. 

Using the phone embedded web server or keypad configuration menu, you 

can further configure the phone using either a static IP or DHCP.

CONNECTING THE PHONE:

PHONE DESCRIPTION:

1. 

Ensure your phone is powered up and connected to the Internet.

2. 

Press the “UP” button to display the IP address.                                                                     

3. 

Type the phone’s IP address in your PC browser.

4. 

Enter  admin’s  username  and  password  to  access  the  configuration  menu. 

(The factory default username is “admin” while the default random password 

can be found on the sticker at the back of the unit).

PHONE CONFIGURATION:

Configure the GRP2603/GRP2603P using a Web Browser:

Line keys

Soft keys

Standard

keypad

Navigation keys

Transfer

Hold

Headset

Message

Message Waiting 

Indicator

Menu/OK key

Volume
Speaker

Send

Mute

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