RouterOS v6.9, смог что-то настроить, подключается оно вот так:
11:33:11 async,ppp,info ppp-out1: initializing...
11:33:11 async,ppp,info ppp-out1: reseting link...
11:33:12 system,info device changed by admin
11:33:13 async,ppp,info ppp-out1: initializing modem...
11:33:13 async,ppp,info ppp-out1: dialing out...
11:33:13 async,ppp,debug ppp-out1: LCP lowerup
11:33:13 async,ppp,debug ppp-out1: LCP open
11:33:13 async,ppp,debug,packet ppp-out1: sent LCP ConfReq id=0x22
11:33:13 async,ppp,debug,packet <mru 1476>
11:33:13 async,ppp,debug,packet <magic 0x4d8130cd>
11:33:13 async,ppp,debug,packet <pcomp>
11:33:13 async,ppp,debug,packet <accomp>
11:33:13 async,ppp,debug,packet <mrru 1476>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd LCP ConfReq id=0x1
11:33:13 async,ppp,debug,packet <mru 1500>
11:33:13 async,ppp,debug,packet <asyncmap 0x0>
11:33:13 async,ppp,debug,packet <magic 0x55f>
11:33:13 async,ppp,debug,packet <pcomp>
11:33:13 async,ppp,debug,packet <accomp>
11:33:13 async,ppp,debug,packet <auth chap>
11:33:13 async,ppp,debug,packet ppp-out1: sent LCP ConfAck id=0x1
11:33:13 async,ppp,debug,packet <mru 1500>
11:33:13 async,ppp,debug,packet <asyncmap 0x0>
11:33:13 async,ppp,debug,packet <magic 0x55f>
11:33:13 async,ppp,debug,packet <pcomp>
11:33:13 async,ppp,debug,packet <accomp>
11:33:13 async,ppp,debug,packet <auth chap>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd LCP ConfRej id=0x22
11:33:13 async,ppp,debug,packet <mrru 1476>
11:33:13 async,ppp,debug,packet ppp-out1: sent LCP ConfReq id=0x23
11:33:13 async,ppp,debug,packet <mru 1476>
11:33:13 async,ppp,debug,packet <magic 0x4d8130cd>
11:33:13 async,ppp,debug,packet <pcomp>
11:33:13 async,ppp,debug,packet <accomp>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd LCP ConfAck id=0x23
11:33:13 async,ppp,debug,packet <mru 1476>
11:33:13 async,ppp,debug,packet <magic 0x4d8130cd>
11:33:13 async,ppp,debug,packet <pcomp>
11:33:13 async,ppp,debug,packet <accomp>
11:33:13 async,ppp,debug ppp-out1: LCP opened
11:33:13 async,ppp,debug,packet ppp-out1: rcvd CHAP Challenge id=0x1
11:33:13 async,ppp,debug,packet <challenge len=16>
11:33:13 async,ppp,debug,packet <name HUAWEI_CHAP_SRVR>
11:33:13 async,ppp,debug,packet ppp-out1: sent CHAP Response id=0x1
11:33:13 async,ppp,debug,packet <response len=16>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd CHAP Success id=0x1
11:33:13 async,ppp,debug,packet Welcome!!
11:33:13 async,ppp,info ppp-out1: authenticated
11:33:13 async,ppp,debug ppp-out1: IPCP lowerup
11:33:13 async,ppp,debug,packet ppp-out1: sent IPCP ConfReq id=0x2b
11:33:13 async,ppp,debug,packet <addr 0.0.0.0>
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug ppp-out1: IPCP open
11:33:13 async,ppp,debug ppp-out1: IPV6CP open
11:33:13 async,ppp,debug ppp-out1: MPLSCP lowerup
11:33:13 async,ppp,debug,packet ppp-out1: sent MPLSCP ConfReq id=0xf
11:33:13 async,ppp,debug ppp-out1: MPLSCP open
11:33:13 async,ppp,debug ppp-out1: BCP open
11:33:13 async,ppp,debug ppp-out1: CCP lowerup
11:33:13 async,ppp,debug ppp-out1: CCP open
11:33:13 async,ppp,debug,packet ppp-out1: rcvd IPCP ConfReq id=0x1
11:33:13 async,ppp,debug,packet ppp-out1: sent IPCP ConfNak id=0x1
11:33:13 async,ppp,debug,packet <addr 0.0.0.0>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd LCP ProtRej id=0x2
11:33:13 async,ppp,debug,packet 82 81 01 0f 00 04
11:33:13 async,ppp,debug,packet ppp-out1: rcvd IPCP ConfNak id=0x2b
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug,packet ppp-out1: sent IPCP ConfReq id=0x2c
11:33:13 async,ppp,debug,packet <addr 0.0.0.0>
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug,packet <ms-dns 0.0.0.0>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd IPCP ConfReq id=0x2
11:33:13 async,ppp,debug,packet ppp-out1: sent IPCP ConfAck id=0x2
11:33:13 async,ppp,debug,packet ppp-out1: rcvd IPCP ConfNak id=0x2c
11:33:13 async,ppp,debug,packet <addr 100.65.90.102>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.37>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.44>
11:33:13 async,ppp,debug,packet ppp-out1: sent IPCP ConfReq id=0x2d
11:33:13 async,ppp,debug,packet <addr 100.65.90.102>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.37>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.44>
11:33:13 async,ppp,debug,packet ppp-out1: rcvd IPCP ConfAck id=0x2d
11:33:13 async,ppp,debug,packet <addr 100.65.90.102>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.37>
11:33:13 async,ppp,debug,packet <ms-dns 10.78.72.44>
11:33:13 async,ppp,debug ppp-out1: IPCP opened
11:33:13 async,ppp,info ppp-out1: could not determine remote address, using 10.112.112.159
11:33:13 async,ppp,info ppp-out1: connected
11:33:13 system,info dns changed
[admin@MikroTik] /interface ppp-client> print
Flags: X - disabled, R - running
0 R name="ppp-out1" max-mtu=1476 max-mru=1476 mrru=1476 port=usb1 data-channel=0 info-channel=1 apn="internet.nw" pin="" user="" password="" profile=default phone="*99***1#" dial-command="ATDT" modem-init="AT+CGDCONT=1,"IP","internet.nw"" null-modem=no dial-on-demand=no add-default-route=yes default-route-distance=1 use-peer-dns=yes keepalive-timeout=30 allow=chap,mschap1,mschap2