IP协议的invite命令相当于七号信令的（）。
被叫收到寻呼但未收到INVITE消息，问题定位为（）。
SIP协议中的invite命令相当于七号信令中的（）消息。
（）消息可以在初始的INVITE消息完成之前发送。
关于SIP中INVITE消息的描述中，正确的是（）。
Some comments are just inviting trouble．
She invited 500 people（）her beautiful ship.
SIP请求消息中（）请求消息用于邀请用户加入一个呼叫；（）请求消息用于对INVITE请求的响应消息进行确认；（）请求消息用于请求能力信息；（）请求消息用于释放已建立的呼叫；（）请求消息用于释放尚未建立的呼叫；（）请求消息用于向SIP网络服务器登记用户位置信息。
INVITE请求的180响应其含义是振铃。
A co-worker is unable to invite you to a Microsoft Windows Meeting Space meeting. You need to receive an invite to the meeting. What should you do？（）
Thanks for inviting me翻译为“谢谢您能来”是对的还是错的
That ’s _______ he refused my invitation.
When we are accepting an invitation we can say:
How can we send out an invitation to guests?
A co-worker is unable to invite you to a Microsoft Windows Meeting Space meeting. You need to receive an invite to the meeting.What should you do？（）
The letter of invitation should be ______.
Thankyou for inviting us. We enjoyed()very much.
An invitation card is an informal invitation.
“request the pleasure / honor of”is a pattern expression in an invitation card, which means “would like to invite.”This expression means “恭请”In Chinese.
“May I have the honor to invite you to be my guest at today’s banquet.” is an informal expression to invite friends to dinner.
—_____ — Certainly, thank you for the invitation（）
非INVITE事务中包含次握手过程（）
When English speakers accept an invitation，they may say（).
对朋友发出邀请时， 开头可以用“I am writing to invite you to...”来表明邀请的目的。
