Help: Asterisk ss7

i was configuring asterisk with ss7 for the nokia swith. I had installed zaptel,libpri,chan_ss7 and asterisk in the written order.All the things got properly installed and i go the line got up showing the green light indication.
While starting asterisk i am getting an error like this.

 Parsing '/etc/asterisk/zapata.conf': Found
[Sep 10 04:33:50] ERROR[18865]: chan_zap.c:10949 process_zap: Unknown signalling method 'ss7'
[Sep 10 04:33:50] ERROR[18865]: chan_zap.c:10524 build_channels: Signalling must be specified before any channels are.[/code]

Also my outgoing call is not working.when i make calls i gets an error like this.

 [code][Sep 10 04:40:09] WARNING[18896]: mtp.c:465 t2_timeout: MTP2 timer T2 timeout (failed to receive 'O', 'N', or 'E' after sending 'O'), initial alignment failed on link 'g1'.
[Sep 10 04:41:26] WARNING[18896]: mtp.c:465 t2_timeout: MTP2 timer T2 timeout (failed to receive 'O', 'N', or 'E' after sending 'O'), initial alignment failed on link 'g1'.
    -- Attempting call on ss7/9846819113 for s@demo:1 (Retry 1)
[Sep 10 04:42:11] WARNING[18911]: l4isup.c:543 cic_hunt_even_mru: No idle circuit found.
[Sep 10 04:42:11] WARNING[18911]: l4isup.c:810 ss7_requester: SS7 requester: No idle circuit available.
[Sep 10 04:42:11] NOTICE[18911]: channel.c:2863 __ast_request_and_dial: Unable to request channel ss7/9846819113
[Sep 10 04:42:11] NOTICE[18911]: pbx_spool.c:341 attempt_thread: Call failed to go through, reason (8) Congestion (circuits busy)

Any one have got error like this???

in console

*CLI> ss7 linestat Linkset: siuc CIC 1 Idle Reset pending CIC 2 Idle Reset pending CIC 3 Idle Reset pending CIC 4 Idle Reset pending CIC 5 Idle Reset pending CIC 6 Idle Reset pending CIC 7 Idle Reset pending CIC 8 Idle Reset pending CIC 9 Idle Reset pending CIC 10 Idle Reset pending CIC 11 Idle Reset pending CIC 12 Idle Reset pending CIC 13 Idle Reset pending CIC 14 Idle Reset pending CIC 15 Idle Reset pending CIC 17 Idle Reset pending CIC 18 Idle Reset pending CIC 19 Idle Reset pending CIC 20 Idle Reset pending CIC 21 Idle Reset pending CIC 22 Idle Reset pending CIC 23 Idle Reset pending CIC 24 Idle Reset pending CIC 25 Idle Reset pending CIC 26 Idle Reset pending CIC 27 Idle Reset pending CIC 28 Idle Reset pending CIC 29 Idle Reset pending CIC 30 Idle Reset pending CIC 31 Idle Reset pending
and

*CLI> ss7 link status linkset siuc, link g1, schannel 16, sls 0, NOT_ALIGNED, rx: 0, tx: 2/4, sentseq/lastack: 127/127, total 0, 4394832

show like this.