Zhone Technologies 900, 800, 600 manual DS0s and B Channels on the Same Facility

Introduction ISDN-PRI Card

Figure 5-2shows an application where a user needs less than 23 B channels (say 6 B channels for video), and some dedicated DS0s (say 12 for LAN-WAN interconnect). In this case, the D channel, B channels, and the DS0s all run on the same facility from the equipment to the carrier. Inside the carrier’s facility access point, the D and B channels are extracted from the facility and sent to the ISDN switch, and the 12 DS0s are extracted from the facility and sent to the carrier's dedicated DACS network. In this example, 5 timeslots are unused.

Carrier

DACSCarrier

ISDN Switch

Carrier

DACS

12 DS-0s

6B+D

T1 With: 1 D Channel

6 B Channels

12 DS-0s

5 Unused Timeslots

IAD

Figure 5-2. DS0s and B Channels on the Same Facility

5-4 Server Cards