Genban IP8820 - Appendix F: Auto Provisioning Routine; Provisioning Process Overview

IP8820/IP8830/IP8840
Installer Guide
F-1
Appendix F. Auto Provisioning Routine
General
The IP8800 series terminals incorporate software routines to automatically provision the
configuration and software of the phone. The basic routine employs CDP, if enabled, to initialize
LAN settings, DHCP to gather basic network and provisioning server information, downloads
configuration and software files from the provisioning server, and registers and subscribes with
the SIP call server using the configuration data. The files with the configuration data can be
encrypted to protect sensitive customer data.
The phone attempts contact with the provisioning server to download configuration files then
checks for software updates. For more details on the configuration files, see Appendix D
. Note
downloads can be disabled separately for the configuration and software files. As a default, the
phone will employ TFTP as the download protocol. Optionally, the phone can employ
HTTP/HTTPS as the provisioning server protocol. If the DHCP server returns a URL for the
HTTP/S Option (default Opt. #160), the IP Phone shifts provisioning protocol to HTTP/HTTPS
using the URL provided to access the server.
DHCP
During the initial and subsequent boot-up cycles, the phone requests various data options from
the DHCP server. The following lists the requested options.
- DHCP Option #1 Subnet Mask
- DHCP Option #2 Time offset in seconds of the local time zone from GMT.
- DHCP Option #3 Default Gateway (router) IP Address
- DHCP Option #6 DNS Server IP Address
- DHCP Option #42 SNTP Server IP Address
- DHCP Option #50 IP address of the phone
- DHCP Option #66 TFTP Server Name
- DHCP Option #150 TFTP Server IP Address has priority over Option 66 when set.
- DHCP Option #160 default HTTP/HTTPS URL for provisioning
TFTP Downloads
When TFTP is employed, the IP Phone will contact the server provided from the DHCP server
using the name or IP address from DHCP Option #66 or #150 or the TFTP server in memory
when the DHCP option is not available. The IP Phone will request the TFTP server send the
global configuration file (“sysconf_8820_sip.cfg” for the IP8820, “sysconf_8830_sip.cfg” for the
IP8830, and “sysconf_8840_sip.cfg” for the IP8840). Data from an unencrypted file is
transferred to the phone memory. If the file is not readable, the phone attempts to decrypt the
file using the decryption key (“decrypt_key”). If decryption is unsuccessful, an error is logged
and the file ignored.
Changes in the provisioning data from the global configuration file are transferred to the phone
memory and the download process is repeated for the phone-specific configuration file.
Configuration data in the phone specific file overwrites data from the global file.