NEC Univerge sv8500 Manual page 1261

For Proprietary Protocol mode, Internal PHI-PRI controls the signaling data, which is accommodated in
Note 1:
the Telephony Server. Call control between Internal PHI-PRI and MG(PRI) is executed via TCP/IP port of
the system.
For SIP mode, the Telephony Server acts as SIP server. In this operation, SP-PHI, which is accommodated
Note 2:
in MPH (Multi Protocol Handler) of the Telephony Server, handles the control signal from/to MG(PRI).
MPH is the interface for the control signal. Call control between SP-PHI and MG(PRI) is executed via
TCP/IP port of the system.
MG(PRI) (1.5M) [SCA-24PRIA/MG-24PRIA]
VOL.2-1008