Abstract: Use of Jensen's inequality as a criterion for comparison of impact of bursty and random errors on digital and signaling channels is presented in this paper. Some examples show that the availability of digital 64kb/s channels and CCS no 7 links is smaller under bursty errors. The CCS no 7 queueing delay time may be longer or shorter under bursty errors depending on MSU length and signaling load.
Key words: Digital communications, Jensen's inequality, availability.