i have a Cisco 2951 that connected to ISDN service and provide a SIP gateway for my freepbx server. this scenario is works fine, inbound and outbound call works together without any issue.
i try to change the freepbx to 3CX, i was change only the IP address on cisco router to map to the 3CX, and configure the 3CX with the right configuration but the call was rejected immediately.
any idea to troubleshoot this case.
This is the current configuration that connected with freepbx:
voice service voip allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip redirect ip2ip signaling forward unconditional fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none sip ! ! voice class uri 1 sip host ipv4:10.198.199.2
interface Serial0/1/1:15 no ip address encapsulation hdlc isdn switch-type primary-net5 isdn incoming-voice voice isdn calling-number 3660009
voice-port 0/1/1:15 connection plar 107 ! !
! ! dial-peer voice 3 pots description Outgoing calls to PSTN destination-pattern 09........ port 0/1/1:15 forward-digits all ! dial-peer voice 1 pots description incoming calls from PSTN incoming called-number . direct-inward-dial ! dial-peer voice 2 voip description incoming calls from FREEPBX session protocol sipv2 incoming uri via 1 dtmf-relay rtp-nte codec g711alaw ! dial-peer voice 4 voip description Outgoing calls to FREEPBX destination-pattern 1.. session protocol sipv2 session target ipv4:10.198.199.2 dtmf-relay rtp-nte codec g711ulaw no vad ! dial-peer voice 5 pots description Outgoing calls to PSTN-Service destination-pattern 1300 port 0/1/1:15 forward-digits all ! !
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