
TMSL 097-44018-26
Issue 2: Sep 99
Page 148
COMMAND CODE: SET-TH-PORT (Contd)
INPUT FORMAT (Contd)
Because the ports are sampled in turn, there is some amount of settling time for the framing circuit. This
settling time causes an error of ±4% in the specified error rate. The observation interval is 15 minutes.
If an MRC or PSM card has only one port active, no sampling occurs.
Error Rate
BPV or CRC counts for an E1 signal
1 port in
service
2 ports in
service
3 ports in
service
4 ports in
service
1 x 10
-8
18
9
6
4
1 x 10
-7
184
92
61
46
1 x 10
-6
1843
922
614
461
1 x 10
-5
18432
9216
6144
4608
2.35 x 10
-5
32767
16384
10922
8192
aid
montype
thlev
meaning
PSM-f-
d[&&-e]
BPV
1–32767
bipolar violations
CRC
cyclic redundancy check errors
MTIE1
1 second threshold
MTIE4
4 second threshold
MTIE16
16 second threshold
MTIE64
64 second threshold
MTIE128
128 second threshold
MTIE512
512 second threshold
MTIE900
900 second threshold
TDEV1
1 second threshold
TDEV4
4 second threshold
TDEV16
16 second threshold
TDEV64
64 second threshold
TDEV128
128 second threshold