1. Evaluate Your Migration Needs

Why do you want to migrate to a VoIP? Are you running a small business and looking to cut installation and service fees? Does VoIP help employees do more online than on-site? If your employees do a lot of their work remotely, the minimal infrastructure of a VoIP system makes for easy setup and training. But you also have to ensure your company has enough network bandwidth to support internet-based phone calls on top of other online work.

2. Set up a Migration Team and a Migration Plan

Once you decide you want to migrate to a VoIP, put together a comprehensive migration plan, and set up a team to manage the process. The team should be interdepartmental, including IT professionals to implement the migration, and employees from various departments who will be using the new system. An interdepartmental team will help you make sure the migration goes smoothly, follows the plan, and benefits the whole organization.

3. Test Install

Before your VoIP goes live, test it. Make sure everything works the way it’s supposed to and look for potential bugs so you can fix them before they can become an issue in the live version of your VoIP.

4. Install

The installation process for VoIP is a little different from traditional phone systems. You don’t need to set up any hardware, and most VoIP software is plug-and-play, so your IT team should be able to install the software on your system and your employees’ devices. Once the VoIP is installed and your employees connect to it, you’re all set.

You may need to include some other steps in your migration, like planning training sessions, but this list can help you get started.

The post Preparing to Migrate to a VOIP Phone System appeared first on David Yin's Blog.

I have a brand new OBi200. I bought it in June 2017. Cost me  US$47.46 plus tax.

The old OBi110 is much cheaper than before. I paid US$66 in 2012.

The new OBi200 Open Box

When it is working, the device looks like below.

Look at the back of the device. There are four ports in total. Phone jack, USB port, Internet RJ45, and DC 12V.

Features of OBi200

• Use Google Voice with the OBi and enjoy free calls inside the USA and Canada
• Call internationally at amazingly low rates to over 150 destinations
• Rates to China, India, and Mexico as low as 1¢ per minute – with no connection fee
• When someone calls, ring multiple OBi devices, anywhere
• Block unwanted nuisance and tele-marketer calls
• Voicemail that acts like email
• Designed, developed and supported in the USA

It is a perfect replacement for my old OBi110.

The post Replace OBi110 by OBi200 appeared first on David Yin's Blog.

Google Voice: Not Supported on OBi Devices After May 15, 2014

Back at the end of October, Obihai announced Google would end its support for the XMPP communication protocol. This announcement came on the heels of Google’s announcement that as of May 15th, XMPP would no longer be supported for third-party VoIP applications. The Google Voice service uses XMPP to connect the OBi to the service. With that, after May 15th Obihai will no longer support the Google Voice service on its OBi devices.

So, it is time to find a alternative service provider. Maybe I will choose one from the following:

• Anveo
• Broadvoice
• Callcentric 
• CallWithUs 
• Localphone  
• OneSuite 

The post Can not use Google Voice with Obi device anymore appeared first on David Yin's Blog.

Here is the data sheet and tecnhical specifications.

spa2002datasheet

The post Sipura SPA-2002 Data Sheet and the Installation Guide appeared first on David Yin's Blog.

Here is the guide for configuration and setup.
http://www.obihai.com/googlevoice.html

The post OBi110 Voice Service Bridge and VoIP Telephone Adapter appeared first on David Yin's Blog.

3. There are chances that the VOIP data can take an unencrypted route in the internet. This gives hackers and crime software developers, a chance to re-frame the original conversation and get bits and pieces of identity information about a customer.
Any data is vulnerable to attackers on the internet. Technology before adoption needs an in-depth study which can help protect us from possible known threats. Even though there are many benefits out of the VOIP access, customers have to take efforts to learn from a VOIP guide and also update related info that can help them avoid vulnerabilities.

The post Security for VOIP appeared first on David Yin's Blog.

SmartVoip also said no expire date for Credit right now, based on the FAQ.

How long does my credit last for calls?
The credit you have purchased will NOT expire.

I does not see how many days left for freedays. There is “Freedays remaining” field in poivY user account page.
The only thing I am not sure is what in the desktop client software.
It shown:

You have 88 freedays left. After this period, normal rate will be applied.

The rule of using SmartVoip is, after top up the account with 15 euros, I have 90 freedays, during this period I can call the free countries for free. After this period, my 15 euros still there, then the normal rate is applied. Then when my 15 euros credit is used up. I can top up it again. The 90 freedays re-start.

The post Another VOIP service provider – SmartVoip appeared first on David Yin's Blog.

The post Improve VOIP traffic in WRT54G appeared first on David Yin's Blog.

The rule of DST should look like this one.
start=< start-time>;end=< end-time>;save=< save-time>
< start-time> and < end-time> are of the form: < month>/< day>/< weekday>HH:[mm[:ss]]]
< save-time> is of form: |HH:[mm[:ss]]]
< month> = 1,2,3,..,12 (for Jan, Feb, .., Dec)
< day> = |1,2,3,..,31
< weedday> = 1, 2, 3, .., 7 (for Mon, Tue, .., Sun), or 0 which has special meaning
HH = hour (0-23), mm = minute (0-59), ss = second (0-59)
< start-time> and < end-time> specify the start and end time-date of daylight saving
time and is the amount of hour/min/sec to add to the current time during
daylight saving period. The < save-time> value can be preceded by a negative (-) sign
if subtraction is desired instead of addition.
If < weekday> is 0, it means the date to start or end daylight saving is at exactly
the given date. In that case, the value must not be negative. If < weekday>
is not zero, then the daylight saving starts or ends on the on or after
the given date if < day> is positive, or on or before the given date if < day> is
negative. If < day> is -1, it means the < weekday> on or before the end-of-the-month
(in other words the last occurrence of < weekday> in that month).
Optional values inside [ ] are assumed to be 0 if they are not specified.
Midnight means 0:0:0 of the given date.
Example 1:
Starts at midnight on 1st Sunday of April; ends at midnight on the last Sunday
of October; add 1 hour (USA, N. America). Below are all equivalent rules:
start=4/1/7/0:0:0;end=10/31/7/0:0:0;­ save=1
start=4/1/7;end=10/-1/7;save=1
start=4/1/7/0;end=10/-1/7/0;save=1­
Example 2:
Starts at midnight on last Sunday of April; ends at midnight on the last Sunday
of September; add 1 hour (Egypt):
start=4/-1/7;end=9/-1/7;save=1 (Egypt)
Example 3:
Starts at midnight on first Sunday of October; ends at midnight on the 3rd
Sunday of March; add 1 hour (New Zealand):
start=10/1/7;3/22/7;save=1 (New Zealand)

The post SPA-2002 Daylight Saving Time setting appeared first on David Yin's Blog.

The post VOIP codec choice appeared first on David Yin's Blog.

SIP port : 5060
Registrar : sip.poivy.com
Proxy server : sip.poivy.com
Outbound proxy server : leave empty
Account name : your PoivY username
Password : your PoivY password
Display name/number : your PoivY username or voipnumber
Stunserver (option) : stun.poivy.com

You can still download the softphone to use through your desktop.

When I buy credit, I can not use the same Paypal account which I used in my Voipstunt.
I tried to use same paypal, but it automaticly refund to me.
It said: This transaction is refunded because we do not allow using the same paypal account on more than one user-account.
That means Voipstunt and poivY use same accounting database.
The company running Voipstund and poivY or others is Betamax GmbH & Co.KG.

The post Change my long distance phone service provider to poivY appeared first on David Yin's Blog.

The post Home VOIP server is possible appeared first on David Yin's Blog.

So, it is time to do some research to find a second choice for backup.
Currently, Voipstunt has an un-expired credit plan.
Keep calling every day untill all free calls are not available.

The post China is not Free any more appeared first on David Yin's Blog.

1) Install a skype and create a new account.
2) Download Voxlib client software, Vox for Skype, and Install it.
3) Setup your cellphone information in Voxlib.

Go to try it.

You can dial phone number within North America from your cellphone, through Skype and Vox.

The post Call North America phone from your Cellphone free appeared first on David Yin's Blog.

The Firmware with device is 3.1.2(a). Nothing wrong.

I went to SIPURA website, and saw the new firmware there.

So, I upgrade it to new version.
Let me show you how to do the upgrade.

1) Download it from the download page. Here

2) Decompress it into a folder.

3) There are two files, spa2002-03-01-05.bin and spa2002-03-01-05.exe.

4) Get the IP address of your SAP-2002.
You can go to SPA’s voice menu by pressing **** on your analog phone and press 110#.
Your current IP will be announced.

5) Run the windows executable from windows machine. It will ask for SPA’s IP-address. It will then try to identify the SPA, and perform the upgrade.
Note: Don’t power off at this time.

The new features and improvement can be found here. It shows you the benefit to upgrade from 3.1.2(a) to 3.1.5.

The post Upgrade SPA-2002 Firmware appeared first on David Yin's Blog.