Chapter 4 Basic and Additional SIP Services

Additional SIP Services

Table 4-2 Additional SIP Services

 

SIP Service

Description

Reference

 

 

 

 

 

Advanced audio

The TOS parameter (which specifies the default IP

See the “SIP Parameters”

 

configuration.

precedence of UDP packets) and AudioMode

section on page 8-9 and

 

 

parameter (which specifies the audio operating mode)

the “Audio Parameters”

 

 

allow you to tune audio configuration.

section on page 8-24.

 

 

 

 

 

Call preferences

The GUI Show Mask or CallPrefGuiShow specify

See the “Call Preference

 

 

which parameters, if any, appear on the Call

Parameters” section on

 

 

Preferences menu on the phone. The GUI Set Mask or

page 8-13.

 

 

CallPrefGuiSet parameters specify which parameters

 

 

 

 

 

on the Call Preferences menu on the phone can be

 

 

 

 

 

changed by an end user. You can use these parameters

 

 

 

 

 

to offer specific features on a subscription basis

 

 

 

 

 

 

 

 

Comfort noise

When silence suppression is turned on in G.711, the

See the “Audio

 

 

Cisco IP Phone calculates and transmits its noise level

Parameters” section on

 

 

to the far end to enable the remote endpoint to generate

page 8-24.

 

 

the appropriate amount of comfort noise. This feature

 

 

 

 

 

provides the remote user with a similar experience to

 

 

 

 

 

that of a PSTN call and prevents silent gaps when

 

 

 

 

 

neither party is talking.

 

 

 

 

 

You enable or disable silence suppression with bit 0 in

 

 

 

 

 

the AudioMode parameter.

 

 

 

 

 

 

 

 

Debugging

You can use the following parameters to troubleshoot

See the “Network

 

diagnostics

operation issues:

Parameters” section on

 

 

NPrintf—Specifies the IP address and port where

page 8-2.

 

 

 

 

 

 

 

debug information is sent.

 

 

 

 

 

TraceFlags—Turns on specific trace features.

 

 

 

 

 

 

 

 

Dial plan

You can use the DialPlan parameter to set specific dial

See the “SIP Parameters”

 

 

plan rules and timeout values. Many of these values are

section on page 8-9.

 

 

determined on a country-by-country basis.

 

 

 

 

 

 

 

 

Disabling access

To prevent tampering and unauthorized access to the

See the “Network

 

to the web

Cisco IP Phone configuration, you can use the OpFlags

Parameters” section on

 

interface

parameter to prevent configuring the phone through the

page 8-2.

 

 

web.

 

 

 

 

 

 

 

 

 

 

 

Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)

 

 

 

 

 

 

OL-4277-01

 

 

 

4-5

 

 

 

 

Page 65
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Cisco Systems 7912G, 7905G manual SIP Service Description Reference, Parameters section on

7912G, 7905G specifications

Cisco Systems is a leading provider of networking and telecommunications equipment, and among its extensive range of products, the Cisco 7900 Series of IP phones has made a notable impact in enterprise communication. Key models in this series include the Cisco 7905G, 7912G, and 7902G, each designed to enhance productivity through advanced features, intuitive interfaces, and robust technology.

The Cisco 7905G is designed for basic telephony needs and is ideal for administrative environments or areas with high call volumes. It features a large single-line LCD display, providing users with clear visibility of call information. The phone supports Power over Ethernet (PoE), making installation easier and reducing clutter by eliminating the need for an additional power supply. Its hands-free and headset support enhances user convenience, allowing for easy multitasking during calls.

Moving on to the Cisco 7912G, this model is designed for more demanding communication requirements. It features a larger, backlit display, providing improved visibility in various lighting conditions. The Cisco 7912G supports up to 12 programmable line or feature keys, giving users the flexibility to tailor the phone to their specific needs. Additionally, it incorporates advanced audio technologies, such as wideband audio for enhanced voice clarity and a built-in speakerphone, allowing users to communicate effectively in busy environments.

The Cisco 7902G, while offering basic features, is a reliable choice for users who need straightforward, cost-effective telephony solutions. It features an intuitive design with three dedicated buttons for line status, a built-in speakerphone, and support for wideband audio. The phone is geared for users who require essential telephony features without the complexity of additional functionalities, making it suitable for front-desk and general office use.

Overall, these models within the Cisco 7900 series exemplify the company's commitment to providing high-quality enterprise communication tools. With a focus on advanced audio technologies, user-friendly interfaces, and adaptability to various business environments, the Cisco 7905G, 7912G, and 7902G cater to the diverse needs of modern organizations. As companies continue to pursue seamless communication, these IP phones remain a valuable asset in their telephony infrastructure, enhancing collaboration and productivity among teams everywhere.