Call forwarding preserves caller ID via CallToken

<p>Twilio is announcing its public beta availability of Call Forwarding with Caller ID preservation. Twilio Elastic SIP Trunking customers who would like to preserve &amp; retain the caller ID from the incoming trunking origination call in their outgoing trunking termination (forwarded) call for context about their customers can now use this feature. Twilio Programmable Voice already has support for this functionality via&nbsp;<a href="https://www.twilio.com/docs/voice/trusted-calling-with-shakenstir#use-a-calltoken-when-forwarding-a-call-programmable-voice"&gt;CallTokens&lt;/a&gt;.&lt;/p>