# Dynamic C config for LTE Nimbelink Modem **URL:** \ **Category:** Rabbit Software\ **Tags:** modem, lte-cat1\ **Created:** [June 28, 2018, 4:48pm UTC](https://forums.digi.com/t/dynamic-c-config-for-lte-nimbelink-modem/19668 "2018-06-28T16:48:48Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![rjberry](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@rjberry](https://forums.digi.com/u/rjberry)\ **Post date:** [June 28, 2018, 4:48pm UTC](https://forums.digi.com/t/dynamic-c-config-for-lte-nimbelink-modem/19668/1 "2018-06-28T16:48:48Z")
Hi, I am trying to configure the ifconfig() for a ppp conection using serial to a Nimbelink let-wm14 modem. I have had success with the GEL3 modem but for some reason the same settings don’t work. I started with the sendexpect not working so I moved those commends to ModemSend and Modem Expect to set up the APN etc (they offer a document on what commands to use). Also I need to use ATDT0 to connect not ATD_99_\*\*1# which is odd but I get a connect response every time i use it. When I at+cgpaddr = 1 the response is the static ip from T-Mobile. BUT when I get past the ifpending(IF\_PPP2) and do the ip\_print\_ifs() the IP is reported as 10.0.0.10 not 10.88.244.103 as it should ( I have a PDN with T-Mobile) Does anyone know why the IP is not correct? is thre a setting in the IFCONFIG() I should use? EDIT: if I use the myhostip it also shows the correct IP Thanks! Rob Berry