单选题What voice endpoint is recommended for use with the Cisco Unified Communications 500 Series for small businesses？（）A IP7961B IP8961C SPA504D SPA9000
单选题
What voice endpoint is recommended for use with the Cisco Unified Communications 500 Series for small businesses？（）
A
IP7961
B
IP8961
C
SPA504
D
SPA9000
参考解析
解析：
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