NEC Univerge sv8500 Manual page 756

9.1.2 Function Overview
Basic Connection
MG has six analog ports and connects IP Network and PSTN. Any IP terminal or SIP terminal can originate
and receive call to/from analog PSTN line when MG-COT is accommodated in the System.
For Proprietary Protocol mode, Internal PHI-BRI controls the signaling data, which is accommodated in
Note:
the Telephony Server. Call control between Internal PHI-BRI and MG-COT is executed via TCP/IP port of
the system.
In some cases, signaling data can be controlled by SP-PHI even though MG-COT operates in Proprietary
Protocol mode. For the detail, refer to "Consideration for SP-PHI Data Assignment" in Data Program-
ming Manual - Business.
For SIP mode, SP-PHI, which is accommodated in MPH (Multi Protocol Handler) of the Telephony Server,
Note:
handles the control signal from/to MG-COT. MPH is the interface for the control signal. Call control be-
tween SP-PHI and MG-COT is executed via TCP/IP port of the system.
MG-COT in the System
Proprietary Protocol SIP
mode mode
Internal PHI-BRI Internal PHE
MPH
IP Terminal
PH to control this operation
MG-COT Card [SCA-6COTA/SCA-6COTC]
SP-PHI
Telephony Server
Signaling Control Data
Voice Data
MG-COT
Card
PSTN
Analog Telephone
VOL.2-503
PFT Line