Nortel Meridian Meridian 1 Feature Description And Administration page 1016

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CHID IE mapping options
553-2901-301 Standard 9.00 January 2002
ISDN QSIG Channel ID Coding
Prior to the introduction of QSIG Channel ID Coding, the channel number in
the Channel ID Information Element (IE) on a Meridian 1 PRI2 QSIG link
matched the timeslot number. A summary of the previous mapping is shown
in Table 79.
Table 79
Previous implementation of Channel IE and timeslot number
Timeslot number
1-15
17-31
16 (signaling)
With the QSIG Channel ID Coding feature, the D-channel can be configured
with one of two CHID IE mapping options.
Timeslot number coded in CHID IE
With this option, the channel number of the CHID IE matches the timeslot
number. Timeslots 17-31 are assigned channel numbers 17-31. This is the
same as the method used prior to the introduction of the QSIG Channel ID
Coding feature. A summary of the mapping performed is shown in Table 80.
Table 80
Timeslot number is coded in CHID IE
Timeslot number
1-15
17-31
16 (signaling)
Channel number for
Meridian 1 software
1-15
16-30
31 (D-channel)
Channel number for
Meridian 1 software
1-15
16-30
31 (D-channel)
Channel number in
Channel ID IE.
1-15
17-31
not applicable
Channel number in
Channel ID IE.
1-15
17-31
not applicable