(8.1) Phone 30 Expansion Module compat. with analog phones

[IPrick11]

I noticed that the knowledge base mentions that analog phones need a REN of less than 1 to work with IP Office. Does any one have experience using any of the below phones or think the below wouldn't be compat?

• Com Dial / 002500-ASO-COO/ Ring E Q # 1.3B
• ITT / 002544-MBA-2OM/ Ring E Q # 01.5A
• GE / 2-9320B/ Ring E Q # 1.0B
• PANA. / KX-TS-17W/ Ring E Q # 1.0B
• VODAVI / 2802-00/ Ring E Q # 0.9B
• CorTelco / 2554-44-mba-20/ Ring E Q # 0.5A

 

[mforrence]

Generally speaking, you're best to use an analog phone with electronic ringer vs a mechanical ringer. Most mechanical ringers will sound, but not very vigorously. The Vodavi will definitely work. I think that Cortelco has a mechanical ringer and isn't very loud.