Hardware Projects » E1/T1 Hardware Interface (including icE1usb)

The two units I use are in locations where there is no GNSS coverage.

After some hours of operation there is 7500 over/underruns reported and the server side restart the connection (at least it start over the ECHO sequence numbers).

It seems that no alarms are sent to the PBX so it don't restart the D-channel. After manual restart of osmo-e1d the D-channel is activated again.

What is the best way of overcoming this?

Log from client (PBX) side:

Thu Apr  4 18:36:05 2024 DLINP octoi_clnt_fsm.c:242 OCTOI_CLIENT(N11MD)[0x555613be18e0]{ACCEPTED}: Rx OCTOI ECHO_RESP (seq=1952, rtt=258)
Thu Apr  4 18:36:10 2024 DLINP octoi_clnt_fsm.c:306 OCTOI_CLIENT(N11MD)[0x555613be18e0]{ACCEPTED}: More than 7500 RIFO underruns per second: Your clock appears to be too fast. Disconnecting.
Thu Apr  4 18:36:10 2024 DLINP octoi_fsm.c:186 OCTOI_CLIENT(N11MD)[0x555613be18e0]{WAIT_RECONNECT}: Event RX_TDM_DATA not permitted
Thu Apr  4 18:36:10 2024 DLINP octoi_fsm.c:186 OCTOI_CLIENT(N11MD)[0x555613be18e0]{WAIT_RECONNECT}: Event RX_TDM_DATA not permitted
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Thu Apr  4 18:36:13 2024 DLINP octoi_fsm.c:186 OCTOI_CLIENT(N11MD)[0x555613be18e0]{WAIT_RECONNECT}: Event RX_TDM_DATA not permitted
Thu Apr  4 18:36:13 2024 DLINP octoi_fsm.c:186 OCTOI_CLIENT(N11MD)[0x555613be18e0]{WAIT_RECONNECT}: Event RX_TDM_DATA not permitted
Thu Apr  4 18:36:20 2024 DLINP octoi_clnt_fsm.c:268 OCTOI_CLIENT(N11MD)[0x555613be18e0]{WAIT_RECONNECT}: Re-starting connection
Thu Apr  4 18:36:20 2024 DLINP octoi_sock.c:169 192.71.31.42:4271: Tx SERVICE_REQ
Thu Apr  4 18:36:20 2024 DLINP octoi_clnt_fsm.c:100 OCTOI_CLIENT(N11MD)[0x555613be18e0]{SVC_REQ_SENT}: Rx SERVICE_ACK (service=1, server_id='TODO-SRV', software_id='osmo-e1d', software_version='0.6.0.14-ff2c7'
Thu Apr  4 18:36:30 2024 DLINP octoi_clnt_fsm.c:242 OCTOI_CLIENT(N11MD)[0x555613be18e0]{ACCEPTED}: Rx OCTOI ECHO_RESP (seq=1953, rtt=288)

Log from server (MGW) side:

Thu Apr  4 18:36:05 2024 DLINP octoi_srv_fsm.c:309 OCTOI_SERVER(N11MD)[0x5555fae6d8e0]{ACCEPTED}: Rx OCTOI ECHO_RESP (seq=886, rtt=300)
Thu Apr  4 18:36:13 2024 DLINP octoi_srv_fsm.c:383 OCTOI_SERVER(N11MD)[0x5555fae6d8e0]{ACCEPTED}: More than 7500 RIFO underruns per second: Peer clock is too slow. Disconnecting.
Thu Apr  4 18:36:13 2024 DE1D e1oip.c:181 (I0:L0) Peer disconnected
Thu Apr  4 18:36:20 2024 DLINP octoi_sock.c:375 192.71.31.51:4270: peer created
Thu Apr  4 18:36:20 2024 DLINP octoi_srv_fsm.c:78 OCTOI_SERVER[0x5555fae6d8e0]{INIT}: Rx SERVICE REQ (service=1, subscriber='N11MD', software='osmo-e1d'/'0.6.0.14-ff2c7', capabilities=0x00000000)
Thu Apr  4 18:36:20 2024 DE1D e1oip.c:136 (I0:L0) New OCTOI client connection for N11MD
Thu Apr  4 18:36:20 2024 DLINP octoi_sock.c:237 N11MD: Tx SERVICE_ACK
Thu Apr  4 18:36:30 2024 DLINP octoi_srv_fsm.c:309 OCTOI_SERVER(N11MD)[0x5555fae6d8e0]{ACCEPTED}: Rx OCTOI ECHO_RESP (seq=1, rtt=293)