Ensuring Voice Quality; Supported Codecs; Cisco Small Business Spa300 Series, Spa500 Series, And Wip310 Ip Phone Administration Guide - Cisco SPA301 Administration Manual

Getting Started

Ensuring Voice Quality

Ensuring Voice Quality

Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide

Number Option
181 Set the IP multicast address (used by the Cisco SPA 9000 to
communicate with the IP phone). Enter the address (use * to enter the
decimal (.)), then press #.
To save, press 1; to review, press 2; to re-enter, press 3; to exit, press *.
7932 Enable or disable the web-based configuration utility. Press 1 to enable
or 0 to disable, then press #.
To save, press 1; to review, press 2; to re-enter, press 3; to exit, press *.
723646 Enable or disables access to the administrative (admin) login on the
configuration utility. Press 1 to enable or 0 to disable, then press #.
To save, press 1; to review, press 2; to re-enter, press 3; to exit, press *.
Voice quality perceived by the subscribers of the IP Telephony service should be
indistinguishable from that of a PSTN.

Supported Codecs

The table shows the codecs (voice compression algorithms) supported by
Cisco SPA IP phones. The Mean Opinion Score (MOS) measures the voice quality
by using a scale of 1–5, where 1 is the lowest quality and 5 is the highest quality.
Codec Complexity and Description
G.711 (A-law Very low complexity. Supports uncompressed
and u-law) 64 kbps digitized voice transmission at one to ten
5ms voice frames-per-packet. This codec
provides the highest voice quality and uses the
most bandwidth of any of the available codecs.
1
MOS
4.5
33