NEC Univerge sv8500 Manual page 1041

12.1.2 Function Overview
Basic Connection
The general structure of this equipment and signaling flow are shown in the diagram below.
B1
D
144 kbps
SP-PHI, which is accommodated in MPH (Multi Protocol Handler) of the Telephony Server, handles the
Note:
control signal from/to MG(BRI). MPH is the interface for the control signal. Call control between SP-PHI
and MG-COT is executed via TCP/IP port of the system.
MG(BRI) in the System
Internal PHE
MPH SP-PHI
IP Terminal
B2
B: Bearer (Voice or data 64 kbps)
D: Data (Call control 16 kbps)
PH to control this operation
Telephony Server
Voice Data
MG(BRI)
Card/Box
VOL.2-788
MG(BRI) [SCA-2BRIA/MG-2BRIA]
Signaling Control Data
Emergency
Telephone
PSTN
Analog Telephone