User manual GRANDSTREAM GXV2100 XML PROVISIONING GUIDE 12-2010

[. . . ] Grandstream Networks, Inc. XML Provisioning Guide GXV3140/GXV3175 IP Multimedia Phone GXV21XX/GXP14XX Enterprise IP Phone www. grandstream. com TABLE OF CONTENTS XML PROVISIONING GUIDE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 PROVISIONING FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] In addition, the XML provisioning implementation may also allow generic XML configuration file on top of the MAC based configuration file. Note: Currently, XML provisioning is supported on the following Grandstream products: · GXV3140 (firmware 1. 0. 3. 24 and above) IP Multimedia Phone · GXV3175 IP Multimedia Phone · GXP21XX/GXP14XX Enterprise IP phones · HT50X Analog Telephone Adapters · GXW40XX FXS IP Analog Gateways PROVISIONING FLOW Start provisioning Request legacy config file cfgMAC Parse and apply new configurations Request XML config file cfgMAC. xml Done Parse and apply new configurations Figure 1: Provisioning Flow. The provision program on the phone will apply and reload the settings after downloading the legacy binary cfgMAC config file. This means that a provision/re-direction server can redirect the device to a XML provision server without reboot. It can also be used to send the XML encryption password. XML SCHEMA AND EXAMPLE FILE The general XML syntax consists of a list of name-value pairs. P-Value is the element and the value of the element is represents the value for that particular configuration that the corresponding P-Value represents. For the complete P-value list, please refer to the legacy configuration templates at http://www. grandstream. com/support/configurationtool. html Example XML configuration file (cfgxxxxxxxxxxxx. xml): <?xml version="1. 0" encoding="UTF-8" ?> <gs_provision version="1"> <mac>000b82123456</mac> Grandstream Networks, Inc. www. grandstream. com XML Provisioning Guide Page 3 of 5 Last Updated: 12/2010 <config version="1"> <P271>0</P271> <P270>Account name</P270> </config> </gs_provision> The mac element is not mandatory. It is designed this way because not all provision systems support MAC address. If it is present, the provision program will validate the mac element with the actual MAC address on the device. XML FILE ENCRYPTION The XML configuration file may be encrypted using AES-256-CBC algorithm. The encryption password is defined in P1359 (XML Config File Password) of the configuration file. The encryption may use salt to enhance security. The algorithm to derive the key and IV from a password is the same as the one used by OpenSSL: The OpenSSL command-line to encrypt the file is as follows: Openssl enc ­e ­aes-256-cbc ­k password ­in config. xml ­out cfgxxxxxxxxxxxx. xml Alternatively, users can also set the XML config file password in the web UI of the phone. Figure 2: Using web UI to define the XML Configuration File Password Grandstream Networks, Inc. [. . . ] This is the industry standard approach and has the strongest safety. Grandstream Networks, Inc. www. grandstream. com XML Provisioning Guide Page 5 of 5 Last Updated: 12/2010 [. . . ]