Hi Kannel seems to don't work properly with transciever mode = 0
As you can see RX conection is not working properly. KANNEL "SERVER" SMS: received 0 (0 queued), sent 1000 (0 queued), store size -1 SMS: inbound (0.00,0.00,0.00) msg/sec, outbound (0.93,3.33,0.11) msg/sec DLR: received 1000, sent 0 DLR: inbound (0.93,3.33,0.11) msg/sec, outbound (0.00,0.00,0.00) msg/sec DLR: 897 queued, using mysql storage Box connections: smsbox:(none), IP 127.0.0.1 (0 queued), (on-line 0d 2h 38m 14s) smsbox:sqlbox, IP 127.0.0.1 (0 queued), (on-line 0d 2h 38m 13s) *smsbox:TEST, IP 127.0.0.1 (505 queued), (on-line 0d 2h 38m 10s) * smsbox:TEST, IP 127.0.0.1 (0 queued), (on-line 0d 2h 38m 9s) SMSC connections: FAKESMSC[FAKESMSC] FAKE:10000 (online 9489s, rcvd: sms 0 / dlr 1000, sent: sms 1000 / dlr 0, failed 0, queued 0 msgs) KANNEL "CLIENT" SMS: received 0 (0 queued), sent 1000 (0 queued), store size -1 SMS: inbound (0.00,0.00,0.00) msg/sec, outbound (3.63,1.97,0.10) msg/sec DLR: received 1321, sent 0 DLR: inbound (4.46,2.51,0.14) msg/sec, outbound (0.00,0.00,0.00) msg/sec DLR: *679 queued*, using internal storage Box connections: smsbox:(none), IP 127.0.0.1 (0 queued), (on-line 0d 2h 42m 3s) SMSC connections: TESTSMSC[TESTSMSC] SMPP:host:port:TEST:TEST (online 9467s, rcvd: sms 0 / dlr 1321, sent: sms 1000 / dlr 0, failed 0, queued 0 msgs) "SERVER" has an openssmp connection used as SMSC by "CLIENT". CLIENT config: group = smsc smsc = smpp smsc-id = TESTSMSC host = host port = port receive-port = port smsc-username = TEST smsc-password = TEST transceiver-mode = 0 source-addr-ton = 0 source-addr-npi = 1 dest-addr-ton = 1 dest-addr-npi = 1 system-type = TEST msg-id-type = 0x00 enquire-link-interval = 10 reconnect-delay = 5 throughput = 25 interface-version = 34 allowed-smsc-id = TESTSMSC reconnect-delay = 5 log-file = "var/log/kannel/testsmsc.log" log-level = 1 SERVER config: group = smsc smsc = fake smsc-id = FAKESMSC port = 10000 transceiver-mode = 0 allowed-smsc-id = FAKESMSC oppensmpp SERVER config: group = core #dlr-storage = mysql # this group defines your opensmppbox group = opensmppbox # our boxc type opensmppbox-id =boxTEST # the port to listen on for smpp connections opensmppbox-port = port # we connect to the following host as a box bearerbox-host = localhost bearerbox-port = 13005 log-level = 1 log-file = "/var/log/kannel/opensmppboxTEST.log" our-system-id = smpp_router #use-systemid-as-smsboxid = false route-to-smsc = FAKESMSC # see sample smpplogins.txt smpp-logins = "/etc/kannel/smpploginsTEST.txt"