cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
309
Views
0
Helpful
1
Replies

Issue with 3G wireless upgraded to 4G

Tzy Chun Chong
Level 1
Level 1

Hi all wireless experts,

I hope this is a correct group to post this question.

I need to upgrade the existing wireless WAN from 3G to 4G, basically just swapping the 4G sim card with the existing 3G card. But after swapping the card, the new 4G wireless WAN couldn't get the IP address. I did some research and debug chat to look for the possible fault and did some fine tune for chat script and APN but still couldn't work, hope some1 can shed some light.

p.s: We're using Australia Telstra 3G, intend swapping to 4G sim card.

Below the original APN setting and related config, it is working alright with the 3G sim cards

Profile 1 = INACTIVE* **
--------
PDP Type = IPv4
Access Point Name (APN) = telstra.internet
Authentication = None

* - Default profile
** - LTE attach profile

chat-script 3TELSTRA "" "AT!CALL1" TIMEOUT 60 "OK"

interface Cellular0/1/0
description TELSTRA 4G-LTE
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
dialer idle-timeout 0
dialer string 3TELSTRA
dialer-group 1

line 0/1/0
script dialer 3TELSTRA
modem InOut
no exec
transport input all
transport output all

The above config were working alright with 3G sim card. But not for 4G sim card.

Below the debug chat output

*Dec 3 16:37:52.707: CHAT0/1/0: Attempting async line dialer script
*Dec 3 16:37:52.707: CHAT0/1/0: Dialing using Modem script: 3TELSTRA & System script: none
*Dec 3 16:37:52.707: CHAT0/1/0: process started
*Dec 3 16:37:52.707: CHAT0/1/0: Asserting DTR
*Dec 3 16:37:52.707: CHAT0/1/0: Chat script 3TELSTRA started
*Dec 3 16:37:52.707: CHAT0/1/0: Sending string: AT!CALL1
*Dec 3 16:37:52.707: CHAT0/1/0: Expecting string: OK
*Dec 3 16:38:52.707: CHAT0/1/0: Timeout expecting: OK
*Dec 3 16:38:52.707: CHAT0/1/0: Chat script 3TELSTRA finished, status = Connection timed out; remote host not responding

I did some research and found this "http://forums.whirlpool.net.au/archive/2132565", but if i removed the "OK". I can see below chat output

*Dec 3 16:25:07.975: CHAT0/1/0: Attempting async line dialer script
*Dec 3 16:25:07.975: CHAT0/1/0: Dialing using Modem script: 3TELSTRA & System script: none
*Dec 3 16:25:07.975: CHAT0/1/0: process started
*Dec 3 16:25:07.975: CHAT0/1/0: Asserting DTR
*Dec 3 16:25:07.975: CHAT0/1/0: Chat script 3TELSTRA started
*Dec 3 16:25:07.975: CHAT0/1/0: Sending string: AT!CALL1
*Dec 3 16:25:07.975: CHAT0/1/0: Chat script 3TELSTRA finished, status = Success

But my cellular doesn't obtain any IP from the ISP.

Cellular0/1/0 unassigned YES NVRAM up up

I tried to play around with the APN below, still no luck.

telstra.internet

telstra.extrarnet

telstra.bigpond

Not sure what to do next.... Please share your experience if you experience this issue before. Thanks.

Regards

Tzy

1 Reply 1

Tzy Chun Chong
Level 1
Level 1

Sorry guys, after all the troubleshooting and found out the root cause is due to sim card data issue. Swapped another sim card is alright now.

Review Cisco Networking for a $25 gift card