[Serusers] Adding +1 to From:/To: for E.164 compliance

[Klaus Darilion]

Ryan Tucker wrote:
> Greetings...
> 
> We are starting to work with a carrier which requires From: and To: to 
> be in E.164 format (e.g. +17005551212).  prefix() only seems to change 
> the INVITE, which doesn't appear to cut the mustard with these guys.  Is 
> there any way to make this happen within SER?
> 
> Thanks!  -rt
> 

Hi Ryan!

This is not the "SIP-way". To and From can't be changed by SIP proxies. 
The PSTN provider should route the calls according the to number in the 
request URI. For setting the CLI, the suggested way is the 
Remote-Party-Id header, which was invented by Cisco and is supported by 
Cisco, Inalp and asterisk.

klaus