Cisco 1941 with EHWIC-4G-LTE-G

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Product codding

Cisco Fourth-Generation (4G) Long-Term Evolution (LTE) Wireless WAN (WWAN) Enhanced High-Speed WAN Interface Card 

Product: EHWIC-4G-LTE-G
Description: 4G WWAN EHWIC - Global Multimode LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS
Minimum IOS: Mainline Cisco IOS Software Release 15.2(4)M3 
             with Modem Firmware 3.5.x or later IOS Release with respective Modem Firmware
          
            Long-Term Evolution (LTE) Wireless WAN (WWAN)
           /    Multimode LTE for all global LTE carriers (Global SKU) that operates LTE on             
          /   /       800-MHz, 900-MHz, 1800-MHz, 2100-MHz or 2600-MHz networks (Europe)
EHWIC-4G-LTE-G
 \     \
  \     Fourth-Generation (4G)
   Enhanced High-Speed WAN Interface Card

#show inventory
NAME: "CISCO1941/K9", DESCR: "CISCO1941/K9 chassis, Hw Serial#: FCZ1735C0RA, Hw Revision: 1.0"
PID: CISCO1941/K9      , VID: V05 , SN: ******(x11)
NAME: "4G WWAN EHWIC - Global Multimode LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS on Slot 0 SubSlot 0", DESCR: "4G WWAN EHWIC - Global Multimode LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS"
PID: EHWIC-4G-LTE-G    , VID: V01 , SN: ******(x11)
NAME: "Modem 0 on Cellular0/0/0", DESCR: "Sierra Wireless MC7710 4G-G"
PID: MC7710            , VID: 10 , SN: *******IMEI(x15)
NAME: "4 Port GE POE EHWIC Switch on Slot 0 SubSlot 1", DESCR: "4 Port GE POE EHWIC Switch"
PID: EHWIC-4ESG-P      , VID: V01 , SN: ******(x11)

LED explained

LED Color Description
WWAN Solid green Indicates the modem is receiving power and is associated and authenticated but not receiving or transmitting data.
Fast green blink Indicates the modem is receiving power and is associated and authenticated. The blink rate is proportional to the transmitted and received data rate.
Slow green blink Indicates the modem is receiving power but is not associated or authenticated and is searching for service. Check the antenna, cable, SIM card, or the user account with your service provider.
Off Indicates the modem is in reset mode.
RSSI Solid green Indicates a high RSSI (greater than -69 dBm).
Medium green blink Indicates a medium-level RSSI (from -89 dBm to -69 dBm).
Slow green blink Indicates a low-level RSSI (from -99 dBm to -89 dBm).
Off Indicates the RSSI is less than -99 dBm. Check for proper antenna attachment. Adjust antenna placement and orientation.
Solid amber Indicates no service is detected. Relocate the equipment.
HSPA+ Solid green Indicates HSPA+ is in service.
Off Indicates that a non-HSPA+ is in service or that there is no service.
LTE Solid green Indicates LTE is in service.
Off Indicates LTE service is not being used.
GPS Solid green Indicates the GPS is active.
Off Indicates the GPS is not active or not detected.

Antenna and cable

Cisco Product Number Description Cable Length Maximum Insertion Loss (cable) or Maximum Gain (antenna) Frequency (MHz) Color
4G-AE010-R Extension base with integral 10-foot cable 10 ft (3 m) 1.4 dB @ 700 MHz, 2.0 dB @ 1.9 GHz, 2.1 dB @ 2.1 GHz, 2.3 dB @ 2.5 GHz, 2.4 dB @ 2.7 GHz 700-2600 MHz Black
4G-LTE-ANTM-D Indoor 4G dipole omnidirectional na 2 dBi 698-806 MHz, 824-894 MHz, 925-960 MHz, 1710-1885 MHz, 1920-1980 MHz, 2110-2170 MHz, 2500-2690 MHz Black
4G-ANTM-OM-CM 4G Indoor Ceiling-Mount Omnidirectional Antenna na 700-960 MHz (1 and 1.5 dBi), 1700-2200 MHz (1.7 and 3.2 dBi), 2500-2700 MHz (3 and 4 dBi) 3G or 4G bands, 698 MHz-2690 MHz White

Configuration

This configuraton relays on EHWIC-3G-HSPA+7 configuration therefore not all trouble shooting steps are included here. For deep deep dive trouble shooting please refere to EHWIC-3G-HSPA+7 config page or references links.

Configure APN profile

APN configuration is stored on the modem nvram not on the router it self. Cisco IOS provides interface to manipulate the modem and modem profiles with following syntax: 

cellular 0/0/0 lte create profile create 1 <apn name> chap <username> <password> ipv4

Use the command below to configure Vodafone contract profile: 

cellular 0/0/0 lte profile create 1 internet chap web web ipv4

Define AT command in a chat-script

Chat script should be applied in global config mode. Please remember that dialer name is a case sensitive. Syntax 

chat-script <dialer_name> "" "AT!CALL1" TIMEOUT 20 "OK"

Command to apply: 

chat-script LTE "" "AT!CALL1" TIMEOUT 20 "OK"

You can manually execute the chat script if needed for debugging purposes. Here LTE is the chat-script name and 0/0/0 is cellular interface 

start-chat LTE 0/0/0

Configure line interface

This line interface information sets low-speed asynchronous “control” interface which communicates with the modem. The line x/x/x number is the same as cellular x/x/x interface number. 

line 0/0/0			'<---This will depend on what slot the card uses'
 exec-timeout 0 0
 script dialer LTE 		'<---Calls the chat-script'
 script activation LTE	'<---activates the script it did not work without and it is not documented anywhere'
 modem InOut
 no exec

!Note - previously used on EHWIC-3G-HSPA+7 card, commands rxspeed 21600000 and txspeed 5760000 here on line 0/0/0 with have no effect on this line; we should use modem AT commands instead. These will be defaulted to rxspeed 100000000 and txspeed 50000000 This is it.

Tests

Results speedtest.net:

  • RSSI: -81 dBm, 2 diversity antennas, 4G card
    • Location: nn160qr@22:00 on 2/11/2013
    • ping: 69ms, DL 7.05Mbps, UL 1.19Mbps
  • RSSI: -77~81 dBm, 2 diversity antennas, 4G card
    • Location: nn160qr@12:00 on 3/11/2013
    • ping: 70ms, DL 3.30Mbps, UL 0.68Mbps
  • RSSI: -78~81 dBm, 1 diversity antennas, 4G card
    • Location: nn160qr@12:05 on 3/11/2013
    • ping: 86ms, DL 3.85Mbps, UL 2.05Mbps
  • RSSI: -78~81 dBm, 0 no antennas, 4G card
    • Location: nn160qr@12:07 on 3/11/2013
    • ping: na ms, DL 0Mbps, UL 0Mbps
Conclusion

Diversity antenna does not improve significantly the link quality

sh cellular 0/0/0 radiocommand on 4G-LTE card does not include Service Provided in stats 

R1#sh cellular 0/0/0 radio
Radio power mode = ON
Current RSSI = -81 dBm
LTE Technology Preference = AUTO
LTE Technology Selected = UNKNOWN
R1#sh cellular 0/0/0 ne
R1#sh cellular 0/0/0 network
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Mobile Country Code (MCC) = 234
Mobile Network Code (MNC) = 15
Packet switch domain(PS) state = Attached
Registration(EMM) state = Registered

References

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