🔍 Key Concepts

• Iridium satellite system capabilities (voice type and data type) • Typical data rates used for maritime satellite services • Difference between analog vs digital satellite communications

💭 Think About

• First, recall whether modern satellite networks like Iridium use analog or digital for voice transmission. • Then, think about whether Iridium’s original standard data channel is considered high-speed or relatively low-speed compared to broadband. • Compare the listed data rates (2.4, 4.8, 9.6 kbps) with what you remember about early Iridium handset or ship terminal specifications.

✅ Before You Answer

• Confirm in your mind if Iridium was designed as a digital or analog satellite constellation. • Check which of the listed data rates matches the commonly quoted Iridium data rate for standard circuit‑switched data. • Make sure the answer you pick matches both the correct voice type (analog/digital) and the correct data rate together.