Yealink SIP-T54S Administrator's Manual page 330

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Phone Model
SIP-T41P/T41S/T27P/T27G
SIP-T40P/T40G/T23P/T23G
SIP-T21(P) E2
At most 100 replace rules can be added to the IP phone.

The expression syntax in the replace rule template is the same as that introduced in the section
Dial Plan using XML Template Files on page 300.
To customize a replace rule template:
Open the template file using an ASCII editor.
1.
Create replace rules between <DialRule> and </DialRule>.
2.
For example:
<Data Prefix="2512" Replace="05922512" LineID="1" />
Where:
Prefix="" specifies the numbers to be replaced.
Replace="" specifies the alternate string instead of what the user enters.
LineID="" specifies the desired line(s) for this rule. When you leave it blank or enter 0, this
replace rule will apply to all lines.
If you want to change the replace rule, specify the values within double quotes.
Save the change and place this file to the provisioning server.
3.
Specify the access URL of the replace rule template in the configuration files.
4.
Procedure
Specify the access URL of the replace rule template using the configuration files.
Central Provisioning
(Configuration File)
304
Values
1~12 stand for line1~line12
0 stands for all lines
0~6
1~6 stand for line1~line6
0 stands for all lines
0~3
1~3 stand for line1~line3
0 stands for all lines
0~2
1~2 stand for line1~line2
<y0000000000xx>.cfg
Description
Specify the access URL of the
replace rule template.
Parameter:
dialplan_replace_rule.url