1. The signaling of SS7 features _____ signaling.

2. SS7 _____ multifrequency tones for signaling.

3. Associated signaling _____ for signaling to network elements to which there is no direct trunk connection.

4. SSPs _____ the packet switches of the SS7 network.

5. Element symbol one is __________.

6. Element symbol two is ____________.

7. Element symbol three is __________.

8. STPs and SCPs are not customarily deployed in pairs.

9. SCPs are always deployed in pairs.

10. A links connect an STP and either an SSP or an SCP.

11. An ACM indicates that an IAM has reached the called subscriber's switch and that the subscriber is not busy.

12. An IAM indicates that a call has reached its proper destination.

13. When a called subscriber picks up the phone, his or her switch sends an ANM to indicate that the trunks should be connected in both directions.

14. An REL is a message that indicates that switches at both ends have released the trunk.

15. All 800 numbers are assigned to a subscriber line themselves.

16. Dialing an 800 number causes the switch to suspend a call and query a database for further instructions.

17. Links that connect nonmated STP pairs in different networks may be referred to as ______________.

18. MTP management messages and ISUP call setup messages are addressed to ___________.

19. The SCCP supports _______________.

20. Signaling units are broken up into units of how many bits?