19.3.3.6. HFA Subscriber at another OpenScape 4000 
Example 1: End-to-end payload between HFA and SIP subscriber (also
HG 3575 and SIP subscriber)
No specific action is necessary with the HG 3500 trunking boards.
OpenScape 4000 B initiates a DMC between the SIP subscriber and HFA subscriber,
resulting in an end-to-end payload connection.
Example
2: End-to-end payload between HFA and SIP trunk (also HG 3575 and SIP
trunk)
