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?
