I have used asterisk-1.4.14, zaptel-1.4.7, chan_ss7-1.0.0 on FC7 all went okay. using sangoma a104dx on both machine. I followed the write up on http://www.voip-info.org/wiki/index.php?page=Asterisk+ss7+setup I have the cross over cable between them. however, wanpipe shows connected but the signaling link does not align. i have my configs for host A ##wanpipe1.conf [devices] wanpipe1 = WAN_AFT_TE1, Comment [interfaces] w1g1 = wanpipe1, , TDM_VOICE, Comment [wanpipe1] CARD_TYPE = AFT S514CPU = A CommPort = PRI AUTO_PCISLOT = NO PCISLOT = 4 PCIBUS = 15 FE_MEDIA = E1 FE_LCODE = HDB3 FE_FRAME = NCRC4 FE_LINE = 1 TE_CLOCK = MASTER TE_REF_CLOCK = 0 TE_HIGHIMPEDANCE = NO LBO = 120OH TE_SIG_MODE = CCS FE_TXTRISTATE = NO MTU = 1500 UDPPORT = 9000 TTL = 255 IGNORE_FRONT_END = NO TDMV_SPAN = 1 TDMV_DCHAN = 0 [w1g1] ACTIVE_CH = ALL TDMV_ECHO_OFF = NO TDMV_HWEC = YES # zaptel.conf loadzone=uk defaultzone=uk span=1,1,0,ccs,hdb3 bchan=1-31 ### ss7.conf [linkset-ennie] enabled => yes use_connect => yes enable_st => no hunting_policy => odd_lru subservice => auto context = default [link-l1] linkset => ennie channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [link-l2] linkset => ennie channels => 1-31 schannel => firstcic => 33 enabled => yes [link-l3] linkset => ennie channels => 1-31 schannel => firstcic => 65 enabled => no [link-l4] linkset => ennie channels => 1-31 schannel => firstcic => 97 enabled => no [host-A] enabled => yes opc => 998 dpc => ennie:98 links => l1:1 for the slave host B ##wanpipe1.conf [devices] wanpipe1 = WAN_AFT_TE1, Comment [interfaces] w1g1 = wanpipe1, , TDM_VOICE, Comment [wanpipe1] CARD_TYPE = AFT S514CPU = A CommPort = PRI AUTO_PCISLOT = NO PCISLOT = 4 PCIBUS = 15 FE_MEDIA = E1 FE_LCODE = HDB3 FE_FRAME = NCRC4 FE_LINE = 1 TE_CLOCK = NORMAL TE_REF_CLOCK = 0 TE_HIGHIMPEDANCE = NO LBO = 120OH TE_SIG_MODE = CCS FE_TXTRISTATE = NO MTU = 1500 UDPPORT = 9000 TTL = 255 IGNORE_FRONT_END = NO TDMV_SPAN = 1 TDMV_DCHAN = 0 [w1g1] ACTIVE_CH = ALL TDMV_ECHO_OFF = NO TDMV_HWEC = YES # zaptel.conf loadzone=uk defaultzone=uk span=1,0,0,ccs,hdb3 bchan=1-31 ### ss7.conf [linkset-mahmud] enabled => yes use_connect => yes enable_st => no hunting_policy => odd_lru subservice => auto context = default [link-l1] linkset => mahmud channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [link-l2] linkset => mahmud channels => 1-31 schannel => firstcic => 33 enabled => no [link-l3] linkset => mahmud channels => 1-31 schannel => firstcic => 65 enabled => no [link-l4] linkset => mahmud channels => 1-31 schannel => firstcic => 97 enabled => no [host-B] enabled => yes opc => 98 dpc => mahmud:998 links => l1:1 Can someone advice on the way forward or has anyone implemented chan_ss7-1.0.0. Thanks Goksie