Across
- 1. hides the GPRS infrastructure from the external network.
- 5. database used for permanent storage of customer information
- 6. text messages of 160 characters
- 7. purpose is to store, forward, convert and deliver SMS
- 9. based on circuit-switched system
Down
- 2. based on packet-switched system
- 3. supervises a number of BTS
- 4. centerpiece of a NSS
- 8. responsible for the delivery of data packets