Can't connect to office servers after VPN using a mobile dongle

For those of you who are based in Singapore and sign up for a mobile broadband either with Singtel or StarHub (as I only got experienced with two of these), I am sharing how to connect to office's resources or servers after you dial your VPN.

Upon launching the software that comes with your dongle, ensure the following settings are intact. APN was initially set to dynamic. I have to manually change to static and under APN: I manually input "internet". If I do not do these and leave the settings as default ie. dynamic, I was able to VPN to office's network however I was unable to connect to servers via ssh or make use of its resources.