>> i have working configuration: >> dahdi 2.1.0.4, asterisk 1.6.1.1, chan_ss7 svn > > against which switch? (Siemens EWSD?) > do you use variant ITU? which hunting policy? > could you share your ss7 and dahdi configuration, please? Siemens EWSD /etc/dahdi/system.conf loadzone=cz defaultzone=cz span=1,1,0,ccs,hdb3,crc4 bchan=1-31 /etc/asterisk/ss7.conf [linkset-ss7trunk] enabled => yes enable_st => no use_connect => no hunting_policy => even_mru context => ss7 language => cz t35 => 15000,timeout subservice => auto [link-l1] enabled => yes linkset => ss7trunk channels => 2-31 schannel => 1 firstcic => 1 echocancel => allways [host-some.host] enabled => yes links => l1:1 opc => 0xXXXX dpc => ss7trunk:0xYYYY [jitter] jbenable = yes jbmaxsize = 1000 jbresyncthreshold = 1000 jbimpl = adaptive --------------------------------------- Marek Cervenka =======================================