6SN1118-0DH21-0AA1

6SN1118-0DH21-0AA1

6SN1118-0DH21-0AA1

毫无疑问，开源软件，更确切地说，自由和开源软件（FOSS）运动给自动化专业人员提供了很多新的选择。但在选择适合的开源软件解决方案时，其中的陷阱和缺点也需要注意。

并不是所有的开源软件都是零成本的，而且有时零成本的解决方案终可能是昂贵的。许多公司提供混合型产品，其中既有免费的社区版，也有收费的功能更丰富的版本。或者他们会提供有偿的支持。这些选择中有许多是的解决方案，但其背后的公司有明显的动机鼓励用户迁移到付费版本。如果付费版本的成本太高，从长远来看，迁移到免费版本可能是浪费精力。

对于那些确实是零成本的解决方案，而且有许多非常有用和强大的例子，值得花一些时间考虑谁在支持这个项目以及为什么。此外，你需要评估一下，你愿意在多大程度上深入了解。

当出现问题时，你将不得不依靠内部资源或围绕项目的社区。许多这样的项目都有一个活跃的社区随时准备提供帮助，但有些项目会随着时间的推移而失败，在这种情况下，您自己维护或忍受转换为其他问题的痛苦。

6SN1118-0DH21-0AA1

Avaya AT&T Partner ACS Messaging R6 + 4 Port License Card 700262058 539C11 WRNTY

Avaya Partner Voice Messaging Large Card Warranty

Avaya Partner 2 Phone System With Partner Mail

AVAYA PARTNER 515B1 700262462 PARTNER MESSAGING 4 PORTS

Avaya Lucent Partner Messaging R1

AVAYA PARTNER 515B1 700262462 PARTNER MESSAGING 4 PORTS

AT&T/Avaya/Lucent 539C11 200 Partner Messaing

 AVAYA PARTNER 515B1 700262462 PARTNER MESSAGING 4 PORTS

Avaya Partner ACS 6.0 Processor 308

AVAYA PARTNER MAIL VS RELEASE 4.1

Avaya Lucent AT&T Partner ACS 103G13 (28) R5 700191307 Remote Access 108319963

Avaya Lucent AT&T Partner Mail VS R5.0 539C8 108624867 w/ 2-Port Expansion Card

AVAYA LUCENT PARTNER ACS PROCESSOR 308 3x8 103G REV 6 R6

Avaya Partner ACS Processor Unit R6.0 w/ extras Made in USA

AVAYA Partner mail VS R4 voicemail 2-port 2yr Warranty!

Avaya Partner 2x4 (Small) VoiceMail Card

Five Refurbished Avaya Lucent Partner MLS-12 Phones, Black (50 Available)

BOX OF 5 -Avaya PARTNER 18D 2 Lines Corded Phone-FULLY REFURBISHED

BOX OF 5 -Avaya PARTNER 18D 2 Lines Corded Phone-FULLY REFURBISHED

Avaya Partner Messaging Module Voicemail R6 R6.0 539C11

Avaya Partner ACS 103G8(28) / R3 3 Line 8 Station Proce

USED Avaya Partner Phone System w/Large voicemail card & 4 Phones

Five Refurbished Avaya Lucent Partner MLS-6 Phones, Black (50 Available)

Lot of 5 Avaya PARTNER 18D black fully refurbed 2year warranty

Lot of 5 Avaya PARTNER 18D black fully refurbed 2year warranty

AVAYA Lucent Partner ACS R6 308 Processor W/ Power Cord & RAC 700216054

Avaya 700226525 Partner Voice Messaging PC card (Large) CWD4B , REL 3.0

Avaya Partner Messaging Release 1.0

Lot of 5 Avaya PARTNER 18D black fully refurbed 2year warranty

Avaya Partner 3920 Wireless/Cordless Phone 0592－5580708

AT&T Lucent Avaya Partner Phone System w/6 phone sets tested No Reserve

LARGE AVAYA Partner Voice Messaging PC Card R4 Call Routing / Mailbox System