Mgi Card Relationships; Theory Of Operation - Samsung Officeserv 7100 Technical Manual

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OfficeServ 7100 SPECIAL APPLICATIONS
TECHNICAL MANUAL PART 2 JANUARY 2009

MGI Card Relationships

Theory of Operation

When an IP call is directed to the OfficeServ 7100 system the MP10/MP10a performs
the call control and setup to the remote calling or called IP endpoint.
Once the MP10/MP10a negotiates the setup a determination is made if the IP call is
intended to be received by another IP device on the IP side or a TDM port on the circuit
switched side of the OfficeServ 7100. When the request is for a circuit switched side
connection, the MP10/MP10a controls the MGI and sets up a channel for the IP call to
use a codec on the MGI as a gateway to the circuit switched environment. The MGI
supports the voice codec to the trunks or stations inside the OfficeServ 7100 system.
All other controls are managed by the MP10/MP10a. i.e. Setup, teardown, LED status
updates in the case of the ITP series keyphones.
The same theory of operation applies on an incoming IP call. The called IP address is
the MP10/MP10a card. The MP10/MP10a informs the calling IP party that the voice
portion of the call will be managed by the MGI. See Figure 3.
Figure 3. MGI and MP10/MP10a LAN Relationship
On-board MGI or MGI-16 card
MGI
MP10/MP10a
LAN
ITP Keyphone, MGI and MP10/MP10a Relationships
ITP Keyphone and iDCS Keyphone Operation
The ITP 5100 series keyphones use the MGI as the voice gateway when connected to
the OfficeServ 7100 system stations or trunks. The MP10/MP10a is involved to provide
call setup and tear down, programmable button functions, displays and system feature
access.
ITP 5100 series keyphones provide Auto Codec Negotiation and follows the VoIP
codec settings of the MGI card(s) used. There can be more ITP keyphones than
2.6.7