The TN2313AP DSI port board interfaces a DSI trunk to the switch backplane via port slots that are standard for DEFINITY products. The TN2313AP is compatible with previous 24-channel DSI circuit packs, including the TN464F (V19 and below), the TN2464 (V19 and below), and the TN767E DSI, except that it does not provide for packet adjunct capabilities.
The TN2313AP supports a variety of applications, including networking of DEFINITY switches, international trunk types, video teleconferencing, and wideband data transmission.
On S8500, S8700, and S8710 Media Servers, this circuit pack does not directly support D-channel signaling and thus does not directly support ISDN-PRI connectivity. However, the TN767 circuit may indirectly support D-channel signaling provided that the central office supports non-facility associated signaling (NFAS). In this case, you use NFAS administration on the server to associate the D-channel of another T1/E1 circuit pack (normally a TN464) with the TN767 circuit pack.
The TN2313AP DSI interface can be configured as 24 channels at 1.544 Mbps. The TN2313 can supply two 8-kHz reference signals to the switch backplane for optional use by the tone clock board in synchronizing the system clock to the received line clock. The TN2313AP is firmware downloadable.