Book name:- computer networking top down approach

Question

I am reading packet switching vs circuit switching from  computer networking a top down approach(pg no. 57) . I came across an example: 

Suppose there are 10 users and that  one user suddenly generates one thousand 1000-bit packets, while other users remain quiescent and don’t generate packets. Under TDM circuit switching with 10 slots per frame  and each slot consisting of 1000 bits, the active user can only use its one time slot per frame to transmit data, while the remaining nine time slots in each frame remain idle. It will be 10 seconds before all of the active user’s one million bits
of data has been transmitted.

Now I don,t know how author got 10s as answer while i am getting 100s as answer.

Kindly help.

Answer 1

Our link is of 1Mbps, we have 10 users so 100kb per channel, 1 frame is 10kb, so the link can send 100 frame per second... So we have 10s for a user to send 1000 packages of 1000b.