SOLVED: Huawei E122 and RB493G

RouterOS General
1

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Hi,

I have connected and powered a Huawei E122 to a RB493G. It is showing under resources/usb, and I can get PPP info from it. I have been able to run AT commands on the device.

When I set the PPP interface to connect, it gets stuck on dialing out status. I have enabled debug logging and not much is outputted.

Can you help with this at all please? I see E122 is not on the compatible hardware list, so maybe this is the problem.

log: (changed by admin=enable/disable PPP interface)

11:46:36 async,ppp,info 3g-modem: initializing modem…
11:46:36 async,ppp,info 3g-modem: dialing out…
11:48:37 async,ppp,info 3g-modem: initializing modem…
11:48:37 async,ppp,info 3g-modem: dialing out…
11:48:53 async,ppp,info 3g-modem: dialing out…
11:48:53 async,ppp,info 3g-modem: disconnected
11:48:53 async,ppp,info 3g-modem: initializing…
11:48:53 async,ppp,info 3g-modem: reseting link…
11:48:53 system,info device changed by admin
11:48:53 async,ppp,info 3g-modem: dialing out…
11:51:28 async,ppp,info 3g-modem: dialing out…
11:51:28 async,ppp,info 3g-modem: disconnected
11:51:28 async,ppp,info 3g-modem: initializing…
11:51:28 async,ppp,info 3g-modem: reseting link…
11:51:28 system,info device changed by admin
11:51:28 async,ppp,info 3g-modem: dialing out…
11:53:46 async,ppp,info 3g-modem: dialing out…
11:53:46 async,ppp,info 3g-modem: disconnected
11:53:46 async,ppp,info 3g-modem: initializing…
11:53:46 async,ppp,info 3g-modem: reseting link…
11:53:46 system,info device changed by admin
11:53:46 async,ppp,info 3g-modem: dialing out…
11:54:18 async,ppp,info 3g-modem: dialing out…
11:54:18 async,ppp,info 3g-modem: disabled
11:54:18 system,info device changed by admin
11:54:21 async,ppp,info 3g-modem: initializing…
11:54:21 async,ppp,info 3g-modem: reseting link…
11:54:21 system,info device changed by admin
11:54:21 async,ppp,info 3g-modem: dialing out…
11:54:56 async,ppp,info 3g-modem: dialing out…
11:54:56 async,ppp,info 3g-modem: disabled
11:54:56 system,info device changed by admin
11:55:56 async,ppp,info 3g-modem: initializing…
11:55:56 async,ppp,info 3g-modem: reseting link…
11:55:56 system,info device changed by admin
11:55:56 async,ppp,info 3g-modem: dialing out…

USB Info:

[admin@MikroTik] /system resource usb> pr

DEVICE VENDOR NAME SPEED

0 2:1 RB400 EHCI 480 Mbps
1 2:2 HUA WEI Huawei Mobile 480 Mbps
2 1:1 RB400 OHCI 12 Mbps

PPP client:

[admin@MikroTik] /interface ppp-client> pr
Flags: X - disabled, R - running
0 ;;; 3G Modem on-demand connection
name=“3g-modem” max-mtu=1500 max-mru=1500 mrru=disabled port=usb2
data-channel=0 info-channel=0 apn=“3internet” pin=“” user=“”
password=“” profile=3internet phone=“” dial-command=“*99#”
modem-init=“ATQ0 V1 E1 S0=0 &C1 &D2” null-modem=no dial-on-demand=no
add-default-route=no use-peer-dns=no keepalive-timeout=10 allow=pap

PPP profile 3internet:

1 name=“3internet” remote-ipv6-prefix-pool=(unknown) use-ipv6=no use-mpls=no
use-compression=no use-vj-compression=no use-encryption=no
only-one=default change-tcp-mss=no

PPP Info:

[admin@MikroTik] /interface ppp-client> info 0
status: ready
pin-status: no password required
functionality: full
gprs-class: A - GPRS & GSM simultaneous
manufacturer: NOT SUPPORT
model: E122
revision: NOT SUPPORT
serial-number: 356881030xxxxxx
current-operator: 3 UK
access-technology: 3G
signal-strengh: -77 dBm
frame-error-rate: n/a
– [Q quit|D dump|C-z pause]

Kind Regards,

Tony

2

try to enable async,debug logs and check what does it say.Maybe one of your init sting values is causing that problem with the connection.

3

I enabled async,debug log and this is the result:

16:52:07 async,ppp,info 3g-modem: initializing…
16:52:07 async,ppp,info 3g-modem: reseting link…
16:52:07 system,info device changed by admin <----enabled ppp interface
16:52:08 async,debug usb2:0: sent ATH
16:52:08 async,debug usb2:0: rcvd ERROR: UNKNOWN
16:52:08 async,ppp,info 3g-modem: initializing modem…
16:52:08 async,debug usb2:0: sent ATQ0 V1 E1 S0=0 &C1 &D2
16:52:08 async,debug usb2:0: rcvd OK
16:52:08 async,ppp,info 3g-modem: dialing out…
16:52:08 async,debug usb2:0: sent 991# <------ I had 99# in the dial string, but it was dialing 99#991# so I removed my setting.
16:54:08 async,debug usb2:0: dial timeout
16:54:08 async,debug usb2:0: resetting modem
16:54:09 async,debug usb2:0: sent ATH
16:54:09 async,debug usb2:0: rcvd ERROR: UNKNOWN
16:54:09 async,ppp,info 3g-modem: initializing modem…
16:54:09 async,debug usb2:0: sent ATQ0 V1 E1 S0=0 &C1 &D2
16:54:09 async,debug usb2:0: rcvd OK
16:54:09 async,ppp,info 3g-modem: dialing out…
16:54:09 async,debug usb2:0: sent 991#
16:54:19 async,ppp,info 3g-modem: dialing out…
16:54:19 async,ppp,debug 3g-modem: LCP lowerdown
16:54:19 async,ppp,debug 3g-modem: LCP down event in initial state
16:54:19 async,ppp,info 3g-modem: disabled
16:54:19 system,info device changed by admin <— disabled ppp interface

Strange how the hangup command ATH returns an error.

Tony

4

Anyone have any ideas on this?

Many thanks!

5

Hello,

The correct PPP settings for Huawei E122 on 3 UK Network are default settings when adding a new PPP Client, but press advanced and add these also:

port=usb2 <—change accordingly
data-channel=0
info-channel=2
apn=“3internet”
dial-command=“ATDT”
dial-on-demand=yes <—change accordingly
add-default-route=no <—change accordingly
use-peer-dns=no <—change accordingly

Many thanks to Uldis at Mikrotik for getting this working.

Tony