Establishing 3G connectivity using CISCO887VAG+7-K9

mitchen · ‎10-02-2012

We have a fixed IP address 3G data SIM which we intend to use as backup for our ADSL connectivity using a CISCO887VAG+7-K9 router. (We have previously implemented similar using the older CISCO887G-K9 router without any issues)

The problem is, we don't seem to be able to establish 3G connectivity with this new router. Our service provider assures us that the SIM card is active (although they have seen no connection attempts from us on their RADIUS server)

The router is running IOS version 15.1(4)M4 and the following is the relevant config we have used:

!

cellular 0 gsm profile create 1 $apn chap $user $pass ipv4

!

chat-script INTERNET "" "AT!SCACT=1,1" TIMEOUT 60 "OK"

!

controller Cellular 0

!

interface Cellular0

no ip address

ip mtu 1452

ip flow ingress

ip nat outside

ip virtual-reassembly in

encapsulation slip

load-interval 60

dialer in-band

dialer pool-member 1

async mode interactive

!

interface Dialer1

ip address negotiated

ip access-group $acl in

ip mtu 1452

ip flow ingress

ip nat outside

ip virtual-reassembly in

encapsulation ppp

dialer pool 1

dialer idle-timeout 0

dialer string INTERNET

dialer persistent

dialer-group 1

ppp chap hostname $user

ppp chap password $pass

no cdp enable

!

access-list 1 permit any

!

dialer-list 1 protocol ip permit

!

sh cellular 0 profile
Profile password Encryption level: 7

Profile 1 = INACTIVE*
--------
PDP Type = IPv4
Access Point Name (APN) = $apn

Authentication = CHAP
Username: $user

Password: $pass

* - Default profile

Configured default profile for active SIM 0 is profile 1.

!

sh cellular 0 network

Current Service Status = Emergency Only, Service Error = None

Current Service = Invalid

Packet Service = None

Packet Session Status = Inactive

Current Roaming Status = Home

Network Selection Mode = Automatic

Country = GBR, Network = 3 UK

Mobile Country Code (MCC) = 234

Mobile Network Code (MNC) = 20

Location Area Code (LAC) = 51

Routing Area Code (RAC) = 51

Cell ID = 17581

Primary Scrambling Code = 330

PLMN Selection = Automatic

!

sh cellular 0 security
Active SIM = 0
SIM switchover attempts = 0
Card Holder Verification (CHV1) = Disabled
SIM Status = OK
SIM User Operation Required = None
Number of CHV1 Retries remaining = 3

!

Can anyone tell me what we are doing wrong and how to correct it so that we can establish connectivity?

Thanks.

mitchen · ‎10-03-2012

Shameless bump for this one!

Has anyone got any ideas where we are going wrong with the configuration of this router?

dpocana78 · ‎10-08-2012

Hi,

In a first sight, it looks fine.

The only thing I can see is the encapsulation on the Dialer interface.

In this model modem, the encapsulation that works is SLIP not PPP. So interface configuration should be:

interface Dialer1

ip address negotiated

ip nat outside

ip virtual-reassembly in

encapsulation slip

load-interval 30

dialer pool 1

dialer idle-timeout 0

dialer string INTERNET

dialer persistent

!

On the other hand, are you sure that your ISP uses CHAP instead of PAP?

About the user/pwd negotiation, don't worry about unconfigure on the Dialer1 interface as it uses the profile to connect.

Regards,

Daniel.

mitchen · ‎10-08-2012

Hi Daniel,

thanks for the suggestion - I tried changing the dialer interface encapsulation to SLIP but still no joy I'm afraid.

The ISP definitely uses CHAP as they have confirmed this with me already.

Any other suggestions on this would be welcome though!

dpocana78 · ‎10-08-2012

Hi Mitchen,

Checking it again, it seems there's also a coverage problem and :

sh cellular 0 network

Current Service Status = Emergency Only, Service Error = None

Current Service = Invalid

Packet Service = None

Packet Session Status = Inactive

Current Roaming Status = Home

Network Selection Mode = Automatic

Country = GBR, Network = 3 UK

Mobile Country Code (MCC) = 234

Mobile Network Code (MNC) = 20

Location Area Code (LAC) = 51

Routing Area Code (RAC) = 51

Cell ID = 17581

Primary Scrambling Code = 330

PLMN Selection = Automatic

!

On the other hand, you should also configure "line 3" as it is the interface which really stablish the communication.

You should configure:

line 3

exec-timeout 0 0

script dialer INTERNET

modem InOut

no exec

transport input all

!

About the CHAP/PAP, according to my ISP, it should be CHAP, but only works with PAP... ;-)

If you still have problems, can you put the output of the debugs:

- debug cellular 0 messages

- debug chat

- debug ppp packet

Regards,

Daniel.

mitchen · ‎10-08-2012

Hi Daniel,

thanks for the further assistance. Actually the show cellular 0 network output has changed slightly since i originally posted (but still doesn't offer me much encouragment!):

Current Service Status = No service, Service Error = None

Current Service = Circuit Switched

Packet Service = None

Packet Session Status = Inactive

Current Roaming Status = Home

Network Selection Mode = Automatic

Country = GBR, Network = 3 UK

Mobile Country Code (MCC) = 234

Mobile Network Code (MNC) = 20

Location Area Code (LAC) = 51

Routing Area Code (RAC) = 255

Cell ID = 0

Primary Scrambling Code = 0

PLMN Selection = Automatic

I already had the "line 3" config that you mentioned, apologies, I should have included that in my original post.

Debug ppp packet didn't return anything, the other debugs are shown below:

debug chat

Oct 8 15:32:58.894: CHAT3: Attempting async line dialer script
Oct 8 15:32:58.894: CHAT3: Dialing using Modem script: INTERNET & System script: none
Oct 8 15:32:58.894: CHAT3: process started
Oct 8 15:32:58.894: CHAT3: Asserting DTR
Oct 8 15:32:58.894: CHAT3: Chat script INTERNET started
Oct 8 15:32:58.894: CHAT3: Sending string: AT!SCACT=1,1
Oct 8 15:32:58.894: CHAT3: Expecting string: OK
Oct 8 15:33:58.894: CHAT3: Timeout expecting: OK
Oct 8 15:33:58.894: CHAT3: Chat script INTERNET finished, status = Connection timed out; remote host not responding

debug cellular 0 messages all

Oct 8 15:31:27.762: [Cellular0]:MGMT RX (HEARTBEAT) (14 bytes):
00 0A 6B 1A 00 00 07 00 00 00 00 00 00 00

Oct 8 15:31:34.766: [Cellular0]:MGMT RX (HEARTBEAT) (14 bytes):
00 0A 6B 1B 00 00 07 00 00 00 00 00 00 00

Oct 8 15:31:41.766: [Cellular0]:MGMT RX (HEARTBEAT) (14 bytes):
00 0A 6B 1C 00 00 07 00 00 00 00 00 00 00

Oct 8 15:31:42.902: [Cellular0]:MGMT RX (MANAGE_PACKET_SESSION) (40 bytes):
00 24 6B 1D 70 04 07 00 00 00 00 00 00 1A 01 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 70 00

Oct 8 15:31:42.906: [Cellular0]:MGMT TX (PROFILE_SUMMARY Non-block) (14 bytes):
00 0A 2B 00 70 01 01 00 00 00 00 00 00 00

Oct 8 15:31:42.906: [Cellular0]:MGMT RX (AVAILABLE_SERVICE) (259 bytes):
00 FF 6B 1E 10 06 07 00 00 00 00 00 00 F5 00 01
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00

Oct 8 15:31:42.910: [Cellular0]:MGMT RX (SYSTEM_STATUS) (72 bytes):
00 44 6B 1F 70 0A 07 00 00 00 00 00 00 3A 00 03
00 02 00 02 00 00 00 00 00 00 00 00 03 00 47 00
42 00 52 04 00 33 00 20 00 55 00 4B 00 00 00 00
00 00 00 00 00 EA 00 14 00 33 00 FF 00 00 00 00
00 00 00 00 00 00 00 00

Oct 8 15:31:42.910: [Cellular0]:CALLCTRL RX Link Status Indication (218 bytes):
00 DA 78 00 01 01 00 D6 00 08 00 33 00 20 00 55
00 4B 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 4C 49 4E 4B 20 44 4F 57 4E 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 04 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 54 60 16 80 04 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00

Oct 8 15:31:42.914: Incoming LSI msg: profile_id = 1, session_state = 0, pdp_context_no = 0
Oct 8 15:31:42.914: new DSR value received, 1

Oct 8 15:31:42.914: old value: handshakes->DSR= 1

Oct 8 15:31:42.914: ip address for profile id 1
87DC6FD0: 000000
87DC6FE0: 0000
Oct 8 15:31:42.914: [Cellular0]:MGMT RX (PROFILE_SUMMARY) (33 bytes):
00 1D 6B 20 70 01 02 00 00 00 00 00 00 13 10 02
03 00 02 00 02 02 02 02 02 02 02 02 02 02 02 02
02

Oct 8 15:31:48.770: [Cellular0]:MGMT RX (HEARTBEAT) (14 bytes):
00 0A 6B 21 00 00 07 00 00 00 00 00 00 00

Oct 8 15:31:55.774: [Cellular0]:MGMT RX (HEARTBEAT) (14 bytes):
00 0A 6B 22 00 00 07 00 00 00 00 00 00 00

But I'm still none the wiser! So, any further assistance would also be appreciated!

Gang Ma · ‎10-23-2012

It is not okay to see

Current Service Status = No service, Service Error = None

My output

#show cellular 0 network

Current Service Status = Normal, Service Error = None

Current Service = Combined

Packet Service = HSPA (Attached)

Packet Session Status = Active

Current Roaming Status = Home

Network Selection Mode = Automatic

Country = CHN, Network = UNICOM

Mobile Country Code (MCC) = 460

Mobile Network Code (MNC) = 1

Gang Ma · ‎10-22-2012

Under interface Cellular0

configure

ip address negotiation

DO NOT use "no ip address"

otherwise, the ip address can't install

Oct 21 05:21:19 UTC: %CISCO800-2-MODEM_UP: Cellular0 modem is now UP.

Oct 21 05:22:41 UTC: %CELLWAN-2-CALL_SETUP_FAIL: Cellular0 data call setup failed due to mismatching IP address.

Oct 21 05:22:43 UTC: Cellular0 DirectIP: Configured IP address 0.0.0.0

does not match the IP address assigned by network 10.9.1.6. Disconnect the call!

Q. Can I configure a static IP address under my cellular interface or does the IP address always have to be negotiated?

A. It is highly recommended that the IP address always be configured as ip address negotiated, even when a fixed (persistent) IP address is required. The cellular interface is spoofed as up/up (status/protocol states), regardless of whether or not the PPP is established. If this interface is configured with a specific IP address (instead of ip address negotiated), and if the PPP is not yet established, the routing table interprets a valid route available through the cellular interface. This problem is avoided by assigning a negotiated IP address. The configuration given previously is particularly important when using the cellular interface as a backup interface.

I think it will fix your issue!

mitchen · ‎10-22-2012

Thanks for the suggestion - but I tried setting the IP address to negotiated and still no connectivity I'm afraid.

Gang Ma · ‎10-23-2012

The dialer1 interface need encapsulation SLIP too

so

interface cellular0

ip address nego

interface Dialer1

encapsulation slip

username and password are not needed under dialer1 I think , because they are included in APN profile.

if the dial fails still,

please enable debug options and post the debug output

debug dialer
debug chat
debug modem

debug cellular 0 messages async

debug cellular 0 messages callcontrol

I have a C881G+7-K9 and configure it in two difference ways: with Dialer and without Dialer , both works!

and refer to

•1. Configuring Cisco 4G-LTE Wireless WAN EHWIC
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/EHWIC-4G-LTESW.pdf

new 3G model uses a different 3G module, need different configuration.

mitchen · ‎10-23-2012

I already had SLIP configured under the Dialer1 interface (from Daniel's suggestion above)

I turned on the debug you suggested, here is the output:

Oct 23 14:15:44.087: Di1 DDR: No free dialer - starting fast idle timer
Oct 23 14:15:45.087: Di1 DDR: No free dialer - starting fast idle timer
Oct 23 14:15:46.087: Di1 DDR: No free dialer - starting fast idle timer
Oct 23 14:15:46.335: CHAT3: Timeout expecting: OK
Oct 23 14:15:46.335: CHAT3: Chat script INTERNET finished, status = Connection timed out; remote host not responding
Oct 23 14:15:46.335: TTY3: Line reset by "Async dialer"
Oct 23 14:15:46.335: TTY3: Modem: (unknown)->HANGUP
Oct 23 14:15:46.335: TTY3: no timer type 0 to destroy
Oct 23 14:15:46.335: TTY3: no timer type 1 to destroy
Oct 23 14:15:46.335: TTY3: no timer type 3 to destroy
Oct 23 14:15:46.335: TTY3: no timer type 4 to destroy
Oct 23 14:15:46.335: TTY3: no timer type 10 to destroy
Oct 23 14:15:46.335: TTY3: no timer type 2 to destroy
Oct 23 14:15:46.987: TTY3: dropping DTR, hanging up
Oct 23 14:15:46.987: tty3: Modem: HANGUP->IDLE
Oct 23 14:15:47.087: Ce0 DDR: rotor dialout [best] least recent failure is also most recent failure
Oct 23 14:15:47.087: Ce0 DDR: rotor dialout [best] trying untried dialout
Oct 23 14:15:47.087: Ce0 DDR: rotor dialout [best] also has most recent failure
Oct 23 14:15:47.087: Ce0 DDR: rotor dialout [best]
Oct 23 14:15:47.087: Di1 DDR: Nailing up the Dialer profile [attempt 54]
Oct 23 14:15:47.087: Di1 DDR: Dialer dialing - persistent dialer profile
Oct 23 14:15:47.087: Ce0 DDR: Dialing cause Persistent Dialer Profile
Oct 23 14:15:47.087: Ce0 DDR: Attempting to dial INTERNET
Oct 23 14:15:47.087: CHAT3: Attempting async line dialer script
Oct 23 14:15:47.087: CHAT3: Dialing using Modem script: INTERNET & System script: none
Oct 23 14:15:47.087: CHAT3: process started
Oct 23 14:15:47.087: CHAT3: Asserting DTR
Oct 23 14:15:47.087: CHAT3: Chat script INTERNET started
Oct 23 14:15:47.087: CHAT3: Sending string: AT!SCACT=1,1
Oct 23 14:15:47.087: CHAT3: Expecting string: OK
Oct 23 14:16:47.087: CHAT3: Timeout expecting: OK
Oct 23 14:16:47.087: CHAT3: Chat script INTERNET finished, status = Connection timed out; remote host not responding
Oct 23 14:16:47.087: TTY3: Line reset by "Async dialer"
Oct 23 14:16:47.087: Ce0 DDR: disconnecting call
Oct 23 14:16:47.087: TTY3: Modem: (unknown)->HANGUP
Oct 23 14:16:47.087: TTY3: no timer type 0 to destroy
Oct 23 14:16:47.087: TTY3: no timer type 1 to destroy
Oct 23 14:16:47.087: TTY3: no timer type 3 to destroy
Oct 23 14:16:47.087: TTY3: no timer type 4 to destroy
Oct 23 14:16:47.087: TTY3: no timer type 10 to destroy
Oct 23 14:16:47.087: TTY3: no timer type 2 to destroy
Oct 23 14:16:47.987: TTY3: dropping DTR, hanging up
Oct 23 14:16:47.987: tty3: Modem: HANGUP->IDLE
Oct 23 14:16:52.987: TTY3: restoring DTR
Oct 23 14:16:53.987: TTY3: CTS came up on IDLE line
Oct 23 14:17:02.087: Ce0 DDR: re-enable timeout
Oct 23 14:17:02.415: [Cellular0]:CALLCTRL RX Link Status Indication (218 bytes):
00 DA 78 00 01 01 00 D6 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 4C 49 4E 4B 20 44 4F 57 4E 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 04 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ED 00 ED 04 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00

Oct 23 14:17:02.419: Incoming LSI msg: profile_id = 1, session_state = 0, pdp_context_no = 0
Oct 23 14:17:02.419: ip address for profile id 1
87BE7B30: 000000
87BE7B40: 0000
Oct 23 14:17:02.423: Cellular0 DirectIP: Remove negotiated IP interface address
Oct 23 14:17:03.087: Ce0 DDR: rotor dialout [best] least recent failure is also most recent failure
Oct 23 14:17:03.087: Ce0 DDR: rotor dialout [best] also has most recent failure
Oct 23 14:17:03.087: Ce0 DDR: rotor dialout [best]
Oct 23 14:17:03.087: Di1 DDR: Nailing up the Dialer profile [attempt 55]
Oct 23 14:17:03.087: Di1 DDR: Dialer dialing - persistent dialer profile
Oct 23 14:17:03.087: Ce0 DDR: Dialing cause Persistent Dialer Profile
Oct 23 14:17:03.087: Ce0 DDR: Attempting to dial INTERNET
Oct 23 14:17:03.087: CHAT3: Attempting async line dialer script
Oct 23 14:17:03.087: CHAT3: Dialing using Modem script: INTERNET & System script: none
Oct 23 14:17:03.087: CHAT3: process started
Oct 23 14:17:03.087: CHAT3: Asserting DTR
Oct 23 14:17:03.087: CHAT3: Chat script INTERNET started
Oct 23 14:17:03.087: CHAT3: Sending string: AT!SCACT=1,1
Oct 23 14:17:03.087: CHAT3: Expecting string: OK

Gang Ma · ‎10-23-2012

hey

Oct 23 14:15:47.087: CHAT3: Sending string: AT!SCACT=1,1

Oct 23 14:15:47.087: CHAT3: Expecting string: OK

Oct 23 14:16:47.087: CHAT3: Timeout expecting: OK

Oct 23 14:16:47.087: CHAT3: Chat script INTERNET finished, status = Connection timed out; remote host not responding

the AT dial command doesn't work. Modem doesn't accept the AT command AT!SCACT or it accept the AT string but dial fails

please try some different chat-script like

chat-script gsm "" "ATDT*99*1,1#" TIMEOUT 30 "CONNECT

chat-script gsm "" "ATDT*98*1,1#" TIMEOUT 30 "CONNECT

and you can reverse telnet to the line 3 and send AT command directly to the modem, check the bottom of the reference list you can find Sierra Wireless guide.

What is the exact model of the built-in modem?

C881G+7-K9 uses

#show controllers cellular 0

Interface Cellular0

3G Modem-QuadBand HSPA+R7/HSPA/UMTS QuadBand EDGE/GPRS Global and GPS,

Cellular modem configuration:

---------------------------

GSM-Carrier Type : Cellular GSM Global.

Following is reference list

Cisco Configuration Guide

3G Mobile Broadband for the Branch office
http://www.cisco.com/web/TR/learn_events/expo2008/sunumlar/lars_thoren.pdf

Configuring 3G Wireless WAN on Modular and Fixed ISRs (HWIC-3G-GSM, HWIC-3G-HSPA, PCEX-3G-HSPA-x)
http://www.cisco.com/en/US/docs/routers/access/1800/1861/software/feature/guide/mrwlsgsm.html

Configuring Cisco EHWIC and 880G for 3.7G (HSPA+)/3.5G (HSPA)
http://www.cisco.com/en/US/docs/routers/access/1800/1861/software/feature/guide/mrwls_hspa.html#wp1513906

Configuring Cisco 4G-LTE Wireless WAN EHWIC
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/EHWIC-4G-LTESW.pdf

Cisco 3G Wireless WAN Enhanced High-Speed WAN Interface Cards for Cisco Integrated Services Routers Generation 2 Q&A
http://www.cisco.com/en/US/prod/collateral/modules/ps5949/ps7272/prod_qas0900aecd80600f5d.html

Dial-on-Demand Routing (DDR)

Configuring Dial-on-Demand Routing (DDR)
http://www.iphelp.ru/doc/3/Cisco.Press.CCIE.Practical.Studies.Volume.I/1587200023/ch07lev1sec3.html

Understanding and Troubleshooting Idle Timeouts
http://www.cisco.com/en/US/tech/tk801/tk133/technologies_tech_note09186a0080094eb7.shtml

Dialer Persistent
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ftdperst.html#wp1030521

Dial Backup Using Dialer Watch Commands
http://www.cisco.com/en/US/docs/ios/12_0/dial/command/reference/drdbakdw.html

how-to-setup-dialer-persistent-for-cisco-3g-radio.html
http://www.jaydien.com/blog/cisco-products/how-to-setup-dialer-persistent-for-cisco-3g-radio.html

Configuration Demo & HOWTO

Understanding and Configuring a HWIC-3G-GSM
http://routing-bits.com/2010/05/12/hwic-3g-gsm/

Cisco 887 3G Router
http://www.problutions.com/?p=639

Initial configuration of a 881G router Cellular interface
http://inetpro.org/wiki/Initial_configuration_of_a_881G_router_Cellular_interface#Activate_Modem

Cisco 881G and PCEX-3G-HSPA Configuration Cheat Sheet
http://www.davidsudjiman.info/2009/05/29/cisco-881g-and-pcex-3g-hspa-configuration-cheat-sheet/

Cisco HWIC-3G How To
http://extwiki.snnap.net/twiki/bin/view/TechWeb/CiscoHwic3GHowTo

Cisco HWIC-3G-GSM Config
http://www.computecnetworks.com/?q=node/51

Supported_AT_Command_Reference-v2.4.pdf

http://www.sierrawireless.com/resources/documents/support/2130617_Supported_AT_Command_Reference-v2.4.pdf

Gang Ma · ‎10-23-2012

C886VAG+7-K9

Secure Router with VDSL2/ADSL2+ over ISDN and Embedded 3.7G HSPA+ Release 7 with SMS/GPS

hmm HSPA+7

same as C881G+7-K9

the chat-script should be good for HSPA+7 modem

mitchen · ‎10-23-2012

I get the following from sh controller cell 0 (which looks to be the exact same as your output from the C881G+7-K9)

Interface Cellular0
3G Modem-QuadBand HSPA+R7/HSPA/UMTS QuadBand EDGE/GPRS Global and GPS,
Cellular modem configuration:
---------------------------
GSM-Carrier Type : Cellular GSM Global.

I will try some other chat scripts and see if it works (I have tried some already without any success - however, I think the one I have currently is the one that is actually specified in the guide for this router?)

Gang Ma · ‎10-23-2012

yeah , the chat-script is good

It is not okay to see

Current Service Status = No service, Service Error = None

My output

#show cellular 0 network

Current Service Status = Normal, Service Error = None

Current Service = Combined

Packet Service = HSPA (Attached)

Packet Session Status = Active

Current Roaming Status = Home

Network Selection Mode = Automatic

Country = CHN, Network = UNICOM

Mobile Country Code (MCC) = 460

Mobile Network Code (MNC) = 1