If set to “Yes”, BT200 will automatically switch on speaker to
answer the incoming call. Set to Intercom/Paging mode, it will answer the call
based on the SIP info header from the server.
Allow Auto Answer by
If the Call-Info header contains answer-after=0, the call be answered
Call-Info
automatically (so called paging mode).
Turn off speaker on
When BYE is received, the phone will turn off its speaker automatically.
remote disconnect

Check SIP User ID for
Check the SIP User ID in Request URI. If they don’t match, the call will be
incoming INVITE
rejected.
Refer-To Use Target
Default is NO. If set to YES, then for Attended Transfer, the “Refer-To” header
Contact
uses the transferred target’s Contact header information.
Disable Multiple Media
Default is No.
Attribute in SDP
Preferred Vocoder
BT200 supports up to 5 different Vocoder types including G.711(a/µ) (also known
as PCMU/PCMA), GSM, G.723.1, G.729A/B.

Configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the
appropriate option in “Choice 1”. Similarly, enter the last Vocoder in this list by
choosing the appropriate option in “Choice 8”.
SRTP Mode
Enable SRTP mode based on selection. Default is No.

Special Feature
Default is Standard. Choose the selection to meet special requirements from Soft
Switch vendors.


SAVING THE CONFIGURATION CHANGES
After the user makes a change to the configuration, press the “Update” button in the Configuration Menu.
The web browser will then display a message window to confirm saved changes.

Grandstream recommends reboot or power cycle the IP phone after saving changes.

REBOOTING THE PHONE REMOTELY
Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in again.
Grandstream Networks, Inc.
BT200 User Manual
Page 29 of 32

Firmware 1.1.6.16
Last Updated: 06/2008

Software Upgrade & Customization
Software (or firmware) upgrades are completed via either TFTP or HTTP. The corresponding configuration settings are in the ADVANCED SETTINGS configuration page.

FIRMWARE UPGRADE THROUGH TFTP/HTTP
To upgrade via TFTP or HTTP, select TFTP or HTTP upgrade method. “Upgrade Server” needs to be set to a valid URL of a HTTP server. Server name can be in either FQDN or IP address format. Here are examples of some valid URLs.

• firmware.mycompany.com:6688/Grandstream/1.1.5.15
• 168.75.215.189


There are two ways to set up the Upgrade Server to upgrade firmware: via Key Pad Menu and Web Configuration Interface.

Key Pad Menu



Only TFTP would be used when configure the phone using key pad. To configure the Upgrade Server via Key Pad Menu options, select “[6]tFtP” from the Main Menu, then press MENU button to enter this option.
Enter the 12-digit IP address. Then, press MENU button to save. Must reboot the phone to take effect.

Web Configuration Interface
To configure the Upgrade Server via the Web configuration interface, open the web browser. Enter the BT200 IP address. Enter the admin password to access the web configuration interface. In the ADVANCED SETTINGS page, enter the Upgrade Server’s IP address or FQDN in the “Firmware Server Path” field. Select TFTP or HTTP upgrade method. Update the change by clicking the “Update” button.
“Reboot” or power cycle the phone to update the new firmware.

During this stage, the LCD will display the firmware file downloading process. If a firmware upgrade fails for any reason (e.g., TFTP/HTTP server is not responding, there are no code image files available for upgrade, or checksum test fails, etc), the phone will stop the upgrading process and re-boot using the existing firmware/software.

Firmware upgrades take around 60 seconds in a controlled LAN or 5-10 minutes over the Internet.
Grandstream recommends completing firmware upgrades in a controlled LAN environment whenever possible.

No Local TFTP Server
For users who do not have a local TFTP server, Grandstream provides a NAT-friendly TFTP server on the public Internet for users to download the latest firmware upgrade automatically. Please check the Support/Download section of our website to obtain this TFTP server IP address:

http://www.grandstream.com/firmware.html .

Alternatively, download and install a free TFTP or HTTP server to the LAN to perform firmware upgrades.