Designed for and fully compatible replacements for use with the DP5000 digital phones and IP5000 IP phones, such as the DP5008, DP5018-S, DP5022-SD, DP5122-SD, DP5032-SD, DP5132-SD, DP5130-SDL, IP5022-SD, IP5122-SD, IP5122-SDC, IP5132-SD, and IP5131-SDL phones.