Cisco ATA 187 User Manual

CHAPTER
1-1
Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)
OL-21862-01
1
Cisco ATA 187 Analog Telephone Adaptor
Overview
This section describes the hardware and software features of the Cisco ATA 187 Analog Telephone
Adaptor (ATA 187) and includes a brief overview of the Session Initiation Protocol (SIP).
The ATA 187 analog telephone adaptors are handset-to-Ethernet adaptors that allow regular analog
phones to operate on IP-based telephony networks. The ATA 187 support two voice ports, each with an
independent phone number. The ATA 187 also has an RJ-45 10/100BASE-T data port.
This section covers these topics:
• Session Initiation Protocol Overview, page 1-2
• Hardware Overview, page 1-5
• Software Features, page 1-5
• Installation and Configuration Overview, page 1-9
Figure 1-1 Cisco Analog Telephone Adaptor
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Cisco ATA 187 Specifications

General

Device Type	Analog Telephone Adapter
Protocol Support	SIP
Power Supply	External power adapter
Voice Codecs	G.711, G.729, G.726
Weight	0.3 kg
Operating Temperature	0 to 40°C (32 to 104°F)
Storage Temperature	-4°F to 140°F (-20°C to 60°C)
Relative Humidity	10% to 90% noncondensing