Connecting Vodafone USB Dongle in Ubuntu 13.04

Connecting Vodafone USB Dongle in Ubuntu 13.04

I am trying to connect Vodafone dongKle(ZTE K3770-Z) in my laptop with
13.04 version of Ubuntu. I went through so many forums, question but
couldn't find exact solution for it.
Yesterday I succeeded once with Sakis3G, but today that also doesn't work,
give me error saying - Port is being used.
Here is the result of lsusb -
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 002: ID 0461:4dfa Primax Electronics, Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 008: ID 19d2:1177 ZTE WCDMA Technologies MSM
Bus 001 Device 004: ID 8087:07da Intel Corp.
Bus 001 Device 005: ID 147e:1002 Upek
Bus 002 Device 003: ID 04f2:b2ea Chicony Electronics Co., Ltd