The ISDN service for carrying analog and digital voice /data is provided in two flavors:
Primary rate B-channel interface (PRI) structure - 30 thirty B-channels and one 64 kbit/s D-channel, (30B+D) -– this service is suitable for the large enterprises with a speed of 1984 kbps
Basic rate interface (BRI) structure - two B-channels and one 16 kbit/s D-channel (2B+D) – this service is suitable for the home and small enterprise with a speed of 144 kbps
The ISDN service for carrying analog and digital voice /data is provided in two flavors:
- Primary rate B-channel interface (PRI) structure - 30 thirty B-channels and one 64 kbit/s D-channel, (30B+D) -– this service is suitable for the large enterprises with a speed of 1984 kbps
- Basic rate interface (BRI) structure - two B-channels and one 16 kbit/s D-channel (2B+D) – this service is suitable for the home and small enterprise with a speed of 144 kbps
