Difference between revisions of "Mikrotik: D-Link DWM-222"

Revision as of 23:18, 15 September 2017

Overview

DWM-222 is 4G/LTE USB modem by D-Link. This article contain configuration details and test results. USB modem was tested connected to Mikrotik RB951G-2HnD with RouterOS version v6.40.1 (stable).

Modem capabilities

• Broadband Wireless Support:
  • LTE/DC-HSPA+/HSPA/WCDMA
  • GSM/GPRS/EDGE

• Radio Frequency Bands:
  • LTE @ 2600/1800/800 MHz
  • UMTS @ 2100/900 MHh
  • Quadband GSM/GPRS/EDGE

• Data Rate:
  • LTE: 3GPP Rel-9 FDD-LTE Cat.4
    • Downlink: Up to 150 Mbps
    • Uplink: Up to 50 Mbps
  • DC-HSPA+
    • Downlink: Up to 42 Mbps
    • Uplink: Up to 5.76 Mbps

Visual indication (Status LED)

• Red (blinking): No SIM Card / No Service (or searching for service) / General Error condition
• Purple (blinking): Connected to 2G (GPRS/EDGE) network
• Blue (blinking): Connected to 3G (UTMS/HSPA/HSPA+)network
• Green (blinking): Connected to 4G (LTE) network

Note: Apparently keep alive of modem is indicated by blinking of status LED. When this status LED turn solid then it was most of the time host disconnect or firmware error/crash. Color remain as "last used" and did not switch to red. You can get modem out of this state for example by power cycling power -> /system routerboard usb power-reset duration=10s

Configuration

General configuration

This configuration is optional but I recommend to set port name. This will make configuration easier to read.

• Switch to port menu and list connected devices. Identify device by id or just by comparing output before and after connecting USB modem:

> /port print

• Set name on identified port (replace "0" with actual port number):

> /port set 0 name=Orange

• List configured ppp client interfaces:

> /interface ppp-client print

• Remove auto-configured interface (adjust name / number if necessary):

/interface ppp-client remove ppp-out1

• Add new ppp client interface:

/interface ppp-client add dial-on-demand=no disabled=no apn=internet data-channel=1 info-channel=2 name=ppp-wan port=Orange

Note1: You may add use-peer-dns=no and modem-init="<AT command>" depending on configuration.

Note2: APN depend on internet provided (cell operator).

Note3: This modem is enabled by default. Option modem-init="AT+CFUN=1" is not necessary.

Native LTE

Modem is not detected as native LTE modem in RouterOS. I am not sure if this is limitation of modem itself or missing support in Mikrotik RouterOS image. Serial "PPP" interface is working fine.

Force band selection