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Cisco ATA 187 Manual

Analog telephone adaptor
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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
OL-21862-01
Cisco Analog Telephone Adaptor
Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)
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C H A P T E R
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  Summary of Contents for Cisco ATA 187

  • Page 1 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.
  • Page 2: Session Initiation Protocol Overview

    Cisco ATA 187 Analog Telephone Adaptor Overview Session Initiation Protocol Overview The ATA187, which operates with Cisco voice-packet gateways, makes use of broadband pipes that are deployed through a digital subscriber line (DSL), fixed wireless-cable modem, and other Ethernet connections.
  • Page 3: Components Of Sip

    SIP servers can interact with other application services, such as Lightweight Directory Access Protocol Note (LDAP) servers, a database application, or an extensible markup language (XML) application. These application services provide back-end services such as directory, authentication, and billable services. Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0) OL-21862-01...
  • Page 4: Sip Clients

    LAN side and the switched-circuit network side. Phones—Can act as either a UAS or UAC. The ATA 187 can initiate SIP requests and respond to •...
  • Page 5 The ATA 187 has one network port—an RJ-45 10/100BASE-T data port to connect an • Ethernet-capable device, such as a computer, to the network. The ATA 187 performs auto-negotiation for duplexity and speed and is capable of 10/100 Mbps, Note full-duplex operation.
  • Page 6: Secure Real-Time Transport Protocol

    INVITE message, the call is established to switch from voice mode to T.38 mode. Cisco Unified Communications Administration allows you to configure a SIP profile that supports T.38 fax communication. Voice Codecs Supported The ATA 187 supports these voice codecs (check your other network devices for the codecs they support): G.711µ-law •...
  • Page 7: Ata 187 Sip Services

    Type of Service (ToS) configuration for audio and signaling ethernet packets • Debugging and diagnostic tools • Modem Standards The ATA 187 supports the following modem standards: V.90 • V.92 • Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0) OL-21862-01...
  • Page 8: Fax Services

    • V.23 • Fax Services The ATA 187 supports two modes of fax services, in which fax signals are transmitted using the G.711 codec: Fax pass-through mode—Receiver-side Called Station Identification (CED) tone detection with • automatic G.711A-law or G.711µ-law switching.
  • Page 9: Supplementary Services

    Redial Installation and Configuration Overview Table 1-1 provides the basic steps required to install and configure the ATA 187 to make it operational in a typical SIP environment where a large number of ATA 187s must be deployed. Table 1-1...
  • Page 10 Chapter 1 Cisco ATA 187 Analog Telephone Adaptor Overview Installation and Configuration Overview Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0) 1-10 OL-21862-01...