4G LTE EHWIC issue

[Vyacheslav_Maliev]

Hello! We have cisco 1921 router with the 4G LTE EHWIC card. We just copied working config from the old cisco 881 router with the 3G HSPA card and it doesn`t connect to ISP network. Error is:

   Inactivity Reason = Activation rejected by GGSN

Also we cant chose PPP encapsulation on cellular interface there is only SLIP. Current configuration is:

...

chat-script hspa-R7 "" "AT!SCACT=1,1" TIMEOUT 60 "OK"

...

interface Cellular0
 no ip address
 encapsulation ppp
 load-interval 60
 dialer in-band
 dialer pool-member 1
 ppp chap refuse
 ppp pap refuse

...

interface Dialer1
 ip address X.X.X.X 255.255.252.0
 encapsulation ppp
 dialer pool 1
 dialer idle-timeout 0
 dialer string hspa-R7 
 dialer persistent
 ppp chap refuse
 ppp pap refuse
 no cdp enable

does 4G LTE card have backward comaptibility with 3G or we have configuration error?

[shbharat]

Hi,

for your reference, configure LTE according to below document:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/software/feature/guide/EHWIC-4G-LTESW.html#wp1054291

if you can attach the config i can look into it.

regards,

Shain

[Mithali_Scott]

Cisco 4G LTE WWAN EHWIC for Cisco ISR G2. With enhanced data rates and improved latency, WWAN services are an ideal way to replace or supplement traditional wire-line services.