請教8老師及各位：I-797B vs I-797A

剛剛收到 I-129 的Approval Notice. 第一次見到 I-797B, 以前在美國從 F-1 轉 H-1B （沒離開美國）都是 I-797A. 有些問題：
I am currently in Canada with Canadian permanent residence.

1. Is I-797B the right Approval Notice for a foreign worker outside the US and requiring a visa to enter the US? Not I-797A？

2. it says

Notice Type: Approval Notice
Class: H1B
Valid from 08/01/2015 to 7/31/2018
Consulate:
POE: Toronto, Canada

The above petition has been approved. Since the petition indicates that the foreign workers will not require a visa to enter the U.S., we notified the listed port of entry or pre-flight inspection office. You may also send the tear-off bottom part of this notice to the worker(s) to show the approval. However, THIS FORM IS NOT A VISA AND MAY NOT BE USED IN PLACE OF A VISA for persons requiring a visa.
 

The tear-off bottom part is like=>
----------------------------------------------------------------------------------------------------------------------------------
The alien may use this portion when applying for a visa at an American consulate abroad, or if no visa is required, when applying for admission to the U.S. 

  ???????????????????????????????????????????????????????????????????????????????
  ???????????????????????????????????????????????????????????????????????????????

  Name          DOB          COB           Class                        Consulate/POE          OCC
  ???              ???            CHINA,       H1B                         TOR                            ???

Questions:
2-1. Do I need to go to the US consulate in Toronto to apply for H1B visa, or I can go to Toronto international airport and show this notice to the border and protection office of the US to get the admission to US?

2-2. I am not sure about the meaning of the second sentence of the body paragraph (in blue). Currently I have B1/B2 valid for 10 years from March 2015, but it is not H1B at all. I have not had H1B in the past 8 years.

2-3: Why in the upper portion, the Consulate is BLANK, and the POE is Toronto, Canada? Does it imply I will go to POE Toronto direclty without having to go to the US consulate in Toronto to get an H1B visa first?

2-4. I don't understand why it says in the blue part that  the petition indicates that the foreign workers will not require a visa to enter the U.S. I have not told my HR that.

非常感謝所有的解答。謝謝！
  

所有跟帖： 

• Reply -863211- ♂ (3956 bytes) () 08/08/2015 postreply 12:02:01

• 謝謝8老師。答疑解惑，助人為樂。讚！ -HKbacktoUSA- ♂ (714 bytes) () 08/08/2015 postreply 12:59:24

• Reply -863211- ♂ (1075 bytes) () 08/08/2015 postreply 13:47:18

• 再謝！ -HKbacktoUSA- ♂ (0 bytes) () 08/08/2015 postreply 14:56:02