PKT-INT (Packet Interface)
Issue 1 May 2002
8-927555-233-142
■ TN799 Control LAN (C-LAN) packet port circuit pack
■ TN2501 Voice Announcements over the LAN (VAL)
The links that pass through the Packet Interface circuit are identified as either
“application” or “system” links as follows:
1. Application links
a. Endpoints requiring connectivity to the server via the C-LAN board’s
Socket interface.
These links pass over the packet bus, and through C-LAN ports.
The following system features use application links of this type.
■ Call Detail Recording (CDR)
■ Dial-up administration
■ Property Management System (PMS)
■ Journal printer
■ Wake-up log printer
■ Announcement circuit pack upload/download of recorded
messages
■ IP phones
2. System links
■ Expansion Archangel links (signaling links for call setup of an EPN’s
endpoints)
■ Center Stage Control Network (CSCN) links
■ ISDN-PRI D-channel signaling links
■ ISDN-BRI D-channel broadcast and point-to-point signaling links
■ Adjunct Switch Application Interface (ASAI) links
■ Remote Socket Control Link (RSCL) (C-LAN, VAL)
■ BRI (TRK and STA)
Distributed PKT-INTs
In earlier G3r systems, every PKT-INT resided in the PPN and terminated all of
the LAP-D links. In S8700 IP Connect, LAP-D links are terminated by the
PKT-INTs within IPSIs that are distributed out to every EPN. Whereas, G3r
allowed up to three active and three standby PKT-INTs in the PPN, S8700 IP
Connect allows one PKT-INT in each EPN (that is, up to 64 PKT-INTs in the
system).
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