2.3 INTERFACE CARDS

These cards provide the interface connections for telephone lines and stations to the KSU and expansion cabi- nets. These cards fit into the universal card slots to configure the system as required.

2.3.1 TRUNK CARDS

8TRK BOARD

This card contains eight loop start C.O. line interface circuits with C.O. disconnect detection. It also contains the circuitry needed for Caller ID. It can be inserted in any universal card slot in all cabinets.

TEPRI DIGITAL TRUNK BOARD

When programmed as a T1 this card provides up to 24 trunk circuits in any combination of the following:

•Loop start lines•DID (Direct Inward Dialing)•Ground start lines•E & M tie lines or two way DID calling

When the card is programmed as a PRI it will provide 23 bearer channels and 1 data channel (23B+D). This card can be installed in slots 3, 4, and 5 of main cabinet and slot 3 in the expansion cabinet. This card is also used for networking to other systems (QSig/PRI networking)*. A maximum of 4 TEPRI boards can be installed per system.

MGI (MEDIA GATEWAY INTERFACE)

The MGI card supports up to 16 VoIP channels. THERE ARE 0 EMBEDDED ON THE CARD. 4 channels can be added by plugging in a MGI-D daughter board. Up to four (4) MGI-D daughter boards can be added to the MGI board, where each MGI-D daughter board provides 4 voice channels.

The MGI3 has the following capabilities:•IP Phones•IP Networking (Network multiple systems over an IP Network)*•G.729 (8K) CODEC, G.723.1, G.711, G.729A CODECs•IP Trunking (SIP/H.323)•T.38 Fax CODEC•Inband or Out-of-band signaling of DTMF tones

Note: The MGI can go in any universal slot in any cabinet. Maximum 10 per system.

*The OfficeServ 7200 can network using QSig over PRI and QSig over IP to other Samsung iDCS Release 2 systems or 7200 systems.

2.3