I have a UBlox Toby L200 modem that was originally associated with an AT&T sim and has sucessfully connected and communicated with AT&T’s network. I am in the process of evaluating the use of the Hologram platform as an alternative to AT&T with these modems. I’ve swapped the sim card and changed the APN to hologram. The device appears to connect again to AT&T (which is what I would have expected) it appears as connected in the hologram dashboard, but when ppp negotiates and sends a ConfReq to be assigned an address and dns servers, the network responds with a TermReq. Here is output from the ppp session
17:32:09.085 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ConfReq id=0x0 <mru 1500> <asyncmap 0xffffffff> <auth pap> <pcomp> <accomp>]
17:32:09.085 [debug] Feb 19 17:32:09 pppd[321]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xa8e35fc7> <pcomp> <accomp>]
17:32:09.085 [debug] Feb 19 17:32:09 pppd[321]: No auth is possible
17:32:09.085 [debug] Feb 19 17:32:09 pppd[321]: sent [LCP ConfRej id=0x0 <auth pap>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xa8e35fc7> <pcomp> <accomp>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ConfReq id=0x1 <mru 1500> <asyncmap 0xffffffff> <pcomp> <accomp>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: sent [LCP ConfAck id=0x1 <mru 1500> <asyncmap 0xffffffff> <pcomp> <accomp>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ConfReq id=0x2 <mru 1500> <asyncmap 0xffffffff> <pcomp> <accomp>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0x5646ade3> <pcomp> <accomp>]
17:32:09.086 [debug] Feb 19 17:32:09 pppd[321]: sent [LCP ConfAck id=0x2 <mru 1500> <asyncmap 0xffffffff> <pcomp> <accomp>]
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ProtRej id=0x0 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: Discarded non-LCP packet when LCP not open
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0x5646ade3> <pcomp> <accomp>]
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: sent [CCP ConfReq id=0x2 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
17:32:09.087 [debug] Feb 19 17:32:09 pppd[321]: sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
17:32:09.088 [debug] Feb 19 17:32:09 pppd[321]: rcvd [LCP ProtRej id=0x0 80 fd 01 02 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
17:32:09.088 [debug] Feb 19 17:32:09 pppd[321]: Protocol-Reject for 'Compression Control Protocol' (0x80fd) received
17:32:09.088 [debug] Feb 19 17:32:09 pppd[321]: rcvd [IPCP ConfRej id=0x2 <compress VJ 0f 01>]
17:32:09.088 [debug] Feb 19 17:32:09 pppd[321]: sent [IPCP ConfReq id=0x3 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
17:32:10.101 [debug] Feb 19 17:32:10 pppd[321]: rcvd [LCP TermReq id=0x3]
17:32:10.101 [info] Feb 19 17:32:10 pppd[321]: LCP terminated by peer
17:32:10.101 [debug] Feb 19 17:32:10 pppd[321]: sent [LCP TermAck id=0x3]
17:32:10.101 [debug] Feb 19 17:32:10 pppd[321]: rcvd [IPCP ConfRej id=0x3]
17:32:10.101 [debug] Feb 19 17:32:10 pppd[321]: Discarded non-LCP packet when LCP not open
17:32:10.331 [info] Feb 19 17:32:10 pppd[321]: Modem hangup
17:32:10.331 [info] Feb 19 17:32:10 pppd[321]: Connection terminated.