How to remove "P-Preferred-Identity"

1. Brekeke Product Name and Version:
Brekeke SIP Server 3.10.6.5/517-12

2. Java version:
Java HotSpot(TM) 64-Bit Server VM 1.8.0_201

3. OS type and the version:
Windows Server 2012 R2 6.3

4. UA (phone), gateway or other hardware/software involved:
UAC:Grandstream Wave 1.2.14,SessionTalk 6.0 GW:AVAYA-SM-8.1.3.2.813207

5. Your problem:

Hi All,

Please help me.

How to Match & Deploy in Dial Plan Rules.

I want to removed To & From ("P-Preferred-Identity").
It use by Grandstream UAC as defalt use.

Some another Gateway setup config to don't accept.
Grandstream Wave Lite (Soft Phone) can't set up for ("P-Preferred-Identity").
Don't work pass Gateway.
Grandstream (Hard Phone) can set up for ("P-Preferred-Identity") to "no"
Work fine pass Gateway.
Another Soft Phone (SessionTalk).
Work fine pass Gateway.

Please give me for sample.

Best Regards,
P. Chartchai

For removing a certain SIP header, put the header name with no value in Deploy Patterns.

For example
[Deploy Patterns]
P-Preferred-Identity =

OK, It work fine, Thank a lot

Dial Plan --- Rule --- Deploy Patterns
+-------------------------------------+
+ Show with green character +
+-------------------------------------+
Call-ID
Diversion
User-Agent
Remote-Party-ID
P-Asserted-Identity

+-------------------------------------+
+ Show with black character +
+-------------------------------------+
P-Charge-Info
P-Source-Device
P-Called-Party-ID
P-Preferred-Identity

I want to known true status

SIP header names with black color are not defined in the spell-checker because they are not mentioned in RFC3261.
But you don't have to worry about it and you can still use them within DialPlan.