May 19 13:10:26 WARNING[25268]: chan_zap.c:7477 zt_pri_error: PRI: !! Got I-frame while link state 2
May 19 13:10:26 WARNING[25268]: chan_zap.c:8465 pri_dchannel: PRI Error: We think we're the CPE, but they think they're the CPE too.

  == Primary D-Channel on span 1 down
May 19 13:10:28 WARNING[25268]: chan_zap.c:2096 pri_find_dchan: No D-channels available!  Using Primary on channel anyway 24!

localhost*CLI> pri show span 1
Primary D-channel: 24
Status: Provisioned, Up, Active
Switchtype: National ISDN
Type: CPE
Window Length: 0/7
Sentrej: 0
SolicitFbit: 0
Retrans: 0
Busy: 0
Overlap Dial: 0
T200 Timer: 1000
T203 Timer: 10000
T305 Timer: 30000
T308 Timer: 4000
T313 Timer: 4000
N200 Counter: 3

May 19 13:11:51 WARNING[25268]: chan_zap.c:8465 pri_dchannel: PRI Error: We think we're the CPE, but they think they're the CPE too.