[Serusers] reuse of existing tcp connection

[Juha Heinanen]

i'm behind gprs service that doesn't allow any incoming udp packets or
establishment of inbound tcp connections.  when i register, a tcp
connection is established between my sip ua and ser.

if there is an existing tcp connection open between sip ua and ser, is
ser supposed to reuse it for all incoming sip traffic, such as
subscribes and notifies?

-- juha