Chapter 5 Parameters and Defaults

Operational Parameters

Table 5-6 OpFlags Parameter Operational Features to Turn On or Off (continued)

Bit Number Definition

11If Bit 11=0, the Cisco ATA requests the device hostname from the DHCP server.

If Bit 11=1, the Cisco ATA uses the device hostname that is specified in DHCP option 12. Default: 0

12Reserved.

13DNS Servers For Name Resolution

If Bit 13=0 (default), use statically configured DNS IP addresses, if available, for name resolution. If statically configured DNS servers are not available, use DHCP-provided DNS IP addresses for name resolution.

If Bit 13=1, use both statically configured DNS IP addresses and as many as two DHCP-provided DNS IP addresses. Therefore, the Cisco ATA can query as many as four DNS IP addresses in one DNS query.

For more information about statically configured DNS IP addresses, see the “DNS1IP” section on page 5-11section and the “DNS2IP” section on page 5-12section.

Default: 0

14DNS Servers For Name Resolution 2

If Bit 14=0 (default), use statically configured DNS IP addresses (DNS1IP and DNS2IP), if available, for name resolution; otherwise, use DHCP-provided DNS IP addresses.

If Bit 14=1, use both statically configured (DNS1IP and DNS2IP) and DHCP-provided DNS IP addresses (maximum of two) for name resolution.

Note This configuration bit gives precedence to statically provided DNS IP addresses over DHCP-provided DNS IP addresses. This bit also overrides the value of OpFlags parameter bit 13.

15Disable UDP Checksum Generation

If Bit 13=0, generate UDP checksum in outgoing UDP packets.

If Bit 13=1, disable generation of of UDP checksum in outgoing UDP packets.

 

Default: 0

 

 

16-27

Reserved.

 

 

28-31

To configure the Cisco ATA to prompt the user for the UIPassword when the user attempts to perform a factory

 

reset or upgrade using the voice configuration menu, configure bits 28 to 31 with the value of 6. Any other value

 

for these bits means that the Cisco ATA will not prompt the user for the UIPassword in these cases.

TimeZone

Description

This parameter is the timezone offset (in hours) from Greenwich Mean Time (GMT) for time-stamping incoming calls with local time (to use for Caller ID display, for example). See the “Additional Description” heading later in the description of this parameter for selecting time offsets for timezones that have 30-minute-factor or 45-minute-factor offset from GMT.

Local time is generated by the following formula:

Local Time=GMT + TimeZone, if TimeZone <= 12

Local Time=GMT + TimeZone - 25, if TimeZone > 12

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for H.323 (version 3.0)

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OL-4804-01

 

 

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Cisco Systems ATA 186, ATA 188 manual TimeZone

ATA 188, ATA 186 specifications

The Cisco Systems ATA 186, or Analog Telephone Adapter, revolutionized the way traditional telephony interacted with Voice over Internet Protocol (VoIP) systems. Designed primarily for home and small office use, the ATA 186 allows users to connect standard analog phones and fax machines to a network, enabling them to take advantage of the benefits of VoIP technology.

One of the defining features of the ATA 186 is its dual port architecture. It includes two FXS ports, allowing users to connect up to two analog telephones. This functionality means that multiple devices can leverage VoIP services simultaneously without the need for separate adapters for each phone. The flexibility of the ATA 186 helps streamline the user experience, facilitating voice communication over an IP network while ensuring users can still use their existing phone equipment.

The ATA 186 employs various technologies to maintain high-quality voice calls. It supports standard voice codecs such as G.711 and G.729, which ensure efficient bandwidth usage while preserving call clarity. The adaptive jitter buffer technology further enhances call quality, compensating for network variations and minimizing latency, which is crucial for clear and uninterrupted conversations.

Additionally, the ATA 186 provides users with advanced calling features that were traditionally available only on PBX systems. These features include caller ID, call waiting, and voicemail functionality, integrating seamlessly with typical telephony services. The device also supports T.38 fax relay, allowing users to send and receive faxes over the internet, thus addressing the needs of environments where fax communication remains essential.

The security of VoIP conversations is also a priority for the ATA 186. It employs encryption protocols such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), ensuring that voice data is securely transmitted across the network. This focus on security helps protect sensitive information transmitted during calls.

Installation and configuration of the ATA 186 is streamlined, with an intuitive web-based interface that simplifies the setup process. This accessibility makes it suitable for users with varying levels of technical expertise, as frequently required adjustments, such as network configurations and firmware updates, can be easily managed.

In conclusion, the Cisco Systems ATA 186 stands out as a versatile and robust solution for users looking to integrate analog phones into a VoIP environment. With its dual port capabilities, high-quality voice codecs, advanced call features, and security measures, it offers a compelling choice for both residential and commercial users seeking seamless telephony integration. As technology evolves, devices like the ATA 186 remain cornerstones in bridging traditional telephony with modern communication systems.