asterisk users - Jul 2005 - no active channel but one active call???

hi,
what does this mean?:

www*CLI> show channels
        Channel  (Context    Extension    Pri )   State Appl.         Data
0 active channels
1 active call

after some searchs got this:

www*CLI> sip show channels
Peer             User/ANR    Call ID      Seq (Tx/Rx)   Format  Last Msg
172.22.22.27     2399        20830697669  00101/3343865   ulaw          Rx: ACK
1 active SIP channel(s)

logs say:

Jul 22 20:28:59 WARNING[26237] channel.c: Exceptionally long queue
length queuing to SIP/2399-27f7
Jul 22 20:29:00 NOTICE[26237] chan_sip.c: Disconnecting call
'SIP/2399-27f7' for lack of RTP activity in 8106 seconds
Jul 22 20:29:00 WARNING[26237] channel.c: Exceptionally long queue
length queuing to SIP/2399-27f7
Jul 22 20:29:01 NOTICE[26237] chan_sip.c: Disconnecting call
'SIP/2399-27f7' for lack of RTP activity in 8107 seconds
Jul 22 20:29:01 WARNING[26237] channel.c: Exceptionally long queue
length queuing to SIP/2399-27f7
Jul 22 20:29:02 NOTICE[26237] chan_sip.c: Disconnecting call
'SIP/2399-27f7' for lack of RTP activity in 8108 seconds
Jul 22 20:29:02 WARNING[26237] channel.c: Exceptionally long queue
length queuing to SIP/2399-27f7
Jul 22 20:29:02 NOTICE[26237] chan_sip.c: Disconnecting call
'SIP/2399-27f7' for lack of RTP activity in 8108 seconds


thanks,
Paradise Dove