Yealink SIP-T2xP Auto Provisioning Manual page 111

Parameter
autoprovision.X.com_aes =
(X ranges from 1 to 50)
autoprovision.X.mac_aes =
(X ranges from 1 to 50)
sip.use_23_as_pound =
sip.rfc2543_hold =
sip.use_out_bound_in_dialog =
Permitted Values
It configures the AES key for decrypting the
Common CFG file.
16 characters
The default value is blank.
It takes effect after a reboot.
It configures the AES key for decrypting the
MAC-Oriented CFG file.
16 characters
The default value is blank.
It takes effect after a reboot.
It enables or disables the phone to reserve
the pound sign when dialing out.
0-Disabled (convert the pound sign into
0 or 1
"%23")
1-Enabled
The default value is 1.
It enables or disables the phone to support
RFC 2543 hold (c=0.0.0.0).
0-Disabled
0 or 1
1-Enabled
The default value is 0.
0 or 1
It enables or disables the phone to keep
Descriptions
Features->General Information->
Reserve # in User Name
Features->General Information->RFC
2543 Hold
Features->General Information->Use
Appendix
Web Setting Path
101