Tesco Siemens DP450

A VoIP DECT Phone that appears to be a rebranded Siemens Gigaset S450IP.

However, many of the features of the S450IP have been disabled and it is effectively locked to Tesco's internet phone service.

Only one IP connection can be defined and you are not able to specify the server addresses. The 'Select VOIP Provider' button only returns Tesco provider details.

It is possible to flash the DP450 with Siemens' firmware, but the Tesco branding remains.

More details are available here.

Getting the DP450 to work with other providers.

I have managed to get my DP450 to register with my asterisk server by configuring my DNS server to resolve sip.tescointernetphone.com to the IP of my asterisk box and adding:

domain=sip.tescointernetphone.com

to the [general] section of sip.conf.

I guess this will prevent me from phoning Tesco Internet Phone users, but at least it lets me use the phone with asterisk.

Official unlocking procedure.

Since the Tesco Internet Phone service is to be ceased from April 26th, 2010 an unlocking procedure has been released.

On your handset:
BASE → SETTINGS → SOFTWARE UPDATE OK

Select and press OK Enter the system PIN (0000) and press OK

The base station establishes a connection to the internet or a local PC.
YES Press the display key to start the firmware update. If no update is needed, this will be displayed.

To unlock the WEB interface of the DP450, you need to enter the following service code. Please use the exact code as is described below, else your phone will not work any more.

SETTINGS → BASE 94762001 (Now "Eeprom" must be displayed)

Insert the following number sequence: 01778 06183 06191 Press OK to finish the programming. "Saved" must be displayed on the Handset.

Then release the phone to be able to upgrade it with the latest Retail firmware version.

SETTING → BASE 94762001 (Now "Eeprom" must be displayed)

Now insert this number sequence: 04850 04351 04864 Press OK to finish the programming. "Saved" must be displayed on the Handset.

After this procedure you can upgrade your phone to use the latest retail firmware version.

SETTINGS → BASE → SOFTWARE UPGRADE

Select and press Enter the system PIN (0000) and press OK
The base station establishes a connection to the internet or a local PC.
YES Press the display key to start the firmware update.

NB: The firmware update can last up to 3 minutes.

Some people experience problems with the firmware upgrade where the process does not complete. If after 30 minutes your handset keeps flashing 'Base 1' you will need to power cycle your phone base by disconnecting the power for 10 minutes and then reconnect it.

Allow the phone to boot and leaving it a further 30 minutes to boot and upgrade. If your handset is still flashing 'Base 1' after this time, you will need to pair the handset to the base.

To do this, follow the procedure below:

On your handset:
SETTINGS → HANDSET → REGISTER

On your base:
Hold down the blue button for 30 seconds. If all goes well, your handset should now be paired and you should be able to make a call.



see: http://gigaset.me.uk/Unlock_Tesco_DP450_IP.pdf
A VoIP DECT Phone that appears to be a rebranded Siemens Gigaset S450IP.

However, many of the features of the S450IP have been disabled and it is effectively locked to Tesco's internet phone service.

Only one IP connection can be defined and you are not able to specify the server addresses. The 'Select VOIP Provider' button only returns Tesco provider details.

It is possible to flash the DP450 with Siemens' firmware, but the Tesco branding remains.

More details are available here.

Getting the DP450 to work with other providers.

I have managed to get my DP450 to register with my asterisk server by configuring my DNS server to resolve sip.tescointernetphone.com to the IP of my asterisk box and adding:

domain=sip.tescointernetphone.com

to the [general] section of sip.conf.

I guess this will prevent me from phoning Tesco Internet Phone users, but at least it lets me use the phone with asterisk.

Official unlocking procedure.

Since the Tesco Internet Phone service is to be ceased from April 26th, 2010 an unlocking procedure has been released.

On your handset:
BASE → SETTINGS → SOFTWARE UPDATE OK

Select and press OK Enter the system PIN (0000) and press OK

The base station establishes a connection to the internet or a local PC.
YES Press the display key to start the firmware update. If no update is needed, this will be displayed.

To unlock the WEB interface of the DP450, you need to enter the following service code. Please use the exact code as is described below, else your phone will not work any more.

SETTINGS → BASE 94762001 (Now "Eeprom" must be displayed)

Insert the following number sequence: 01778 06183 06191 Press OK to finish the programming. "Saved" must be displayed on the Handset.

Then release the phone to be able to upgrade it with the latest Retail firmware version.

SETTING → BASE 94762001 (Now "Eeprom" must be displayed)

Now insert this number sequence: 04850 04351 04864 Press OK to finish the programming. "Saved" must be displayed on the Handset.

After this procedure you can upgrade your phone to use the latest retail firmware version.

SETTINGS → BASE → SOFTWARE UPGRADE

Select and press Enter the system PIN (0000) and press OK
The base station establishes a connection to the internet or a local PC.
YES Press the display key to start the firmware update.

NB: The firmware update can last up to 3 minutes.

Some people experience problems with the firmware upgrade where the process does not complete. If after 30 minutes your handset keeps flashing 'Base 1' you will need to power cycle your phone base by disconnecting the power for 10 minutes and then reconnect it.

Allow the phone to boot and leaving it a further 30 minutes to boot and upgrade. If your handset is still flashing 'Base 1' after this time, you will need to pair the handset to the base.

To do this, follow the procedure below:

On your handset:
SETTINGS → HANDSET → REGISTER

On your base:
Hold down the blue button for 30 seconds. If all goes well, your handset should now be paired and you should be able to make a call.



see: http://gigaset.me.uk/Unlock_Tesco_DP450_IP.pdf
Created by: kingmob, Last modification: Wed 09 of May, 2012 (04:01 UTC) by admin
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