Datasheet

DS2155
90 of 238
16.2.1.2 E1 Mode
In E1 mode, TS16 carries the signaling information. This information can be in either CCS (common
channel signaling) or CAS (channel associated signaling) format. The 32 time slots are referenced by two
different channel number schemes in E1. In “Channel” numbering, TS0–TS31 are labeled channels 1
through 32. In “Phone Channel” numbering, TS1–TS15 are labeled channel 1 through channel 15 and
TS17–TS31 are labeled channel 15 through channel 30.
Table 16-A. Time Slot Numbering Schemes
TS
0 1 2 3 4 5 6 7 8 9 10 11 1213 14 1516 17 1819 20 2122 23 2425 26 27 28 29 30 31
Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 1415 16 1718 19 2021 22 2324 25 2627 28 29 30 31 32
Phone
Channel
1 2 3 4 5 6 7 8 9 10 11 1213 14 15 1617 18 1920 21 2223 24 2526 27 28 29 30