User manual BIZFON BIZFON 4000 ADMINISTRATOR GUIDE II

[. . . ] Bizfon Manual II: Administrator's Guide Manual II: Administrator's Guide Edition 1 SW Release 4. 1. 28 and higher, June 2007 Bizfon2000 and Bizfon4000 (SW Version 4. 1. x) Bizfon Manual II: Administrator's Guide Table of Contents Manual I: see Installation Guide Step-by-step guide to install and configure Bizfon basically. Manual II: Administrator's Guide About this Administrator's Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Bizfon's Graphical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Administrator's Main Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recurrent Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Press the Clear All Records button in the Call Statistics Settings page. Confirm the deletion by clicking on Yes. The call statistics will then be deleted. To abort the deletion and keep the statistics information, click on No. Bizfon2000 and Bizfon4000 (SW Version 4. 1. x) 54 Bizfon Manual II: Administrator's Guide Administrator's Menus RTP Statistics The RTP Statistics page provides detailed information about the established call is provided. When Bizfon serves as an RTP proxy, this page displays two groups (legs) of RTP statistics. For example, when calling from an IP Phone attached to the Bizfon's IP line to an external SIP destination or from one external SIP destination to another through the Bizfon's Auto Attendant. Each group of parameters describes characteristics of a piece of RTP stream composing an overall SIP session. Normally, one leg describes the RTP stream from caller to the Bizfon and the other leg describes the RTP stream from Bizfon to the destination. Quality - estimated call quality, which depends on RTP statistic. Below is the legend for Call Quality definitions on the displayed RTP Statistics: excellent ­ RX Lost Packets < 1% & RX Jitter < 20 good - RX Lost Packets < 5% & RX Jitter < 80 satisfactory - RX Lost Packets < 10% & RX Jitter < 150 bad - RX Lost Packets < 20% & RX Jitter < 200 very bad - RX Lost Packets > 20% or RX Jitter > 200 Rx/Tx Codec - codec for received and transmitted RTP stream respectively. Rx/Tx Packets - number of RTP packets received and transmitted respectively. Rx/Tx Packet Size - size of RTP packet (payload) received and transmitted respectively. Rx Lost Packets - number of lost RTP packets for received stream. Rx Jitter - inter-arrival jitter is an estimate of the statistical variance of the RTP data packet inter-arrival time, measured in timestamp units. The inter-arrival jitter is defined to be the mean deviation (smoothed absolute value) of the difference D in packet spacing at the receiver compared to the sender for a pair of packets. If Si is the RTP timestamp from packet i, and Ri is the time of arrival in RTP timestamp units for packet i, then for two packets i and j, D may be expressed as: D(i, j) = (Rj - Ri) - (Sj - Si) = (Rj - Sj) - (Ri - Si) J(i) = J(i-1) + (|D(i-1, i)| - J(i-1))/16, where J(i) is Rx Jitter for packet i. For more details about Jitter calculations, please refer to the RFC1889. Rx Maximum Delay - maximum variance (absolute value) of actual arrival time of the RTP data packet compared to estimated arrival time, measured in milliseconds. If Si is the RTP timestamp from packet i, and Ri is the time of arrival in RTP timestamp units for packet i, then variance for packet i may be expressed as following: V(i) = |(Ri - R1) - (Si - S1)| = |(Ri - Si) - (R1 - S1)| Rx Maximum Delay = max V(i) / 8 RX Delay Increase Count ­ indicates the number of times the delay in jitter buffer is increased during the call. RX Delay Decrease Count - indicates the number of times the delay in jitter buffer is decreased during the call. Please Note: RTP Statistics is logged only when at least one of the call endpoints is located on the Bizfon. For example, it will not be logged when: Fig. [. . . ] You agree to use your best efforts and take all reasonable steps to safeguard the Licensed Materials to ensure that no unauthorized person shall have access thereto and that no unauthorized copy, publication, disclosure or distribution thereof, in whole or in part, in any form, shall be made. The only warranty the Licensor makes to you in connection with this license is that the media on which the Licensed Materials are recorded will be free from defects in materials and workmanship under normal use for a period of one (1) year from the date of purchase (the "Warranty Period"). If you determine within the Warranty Period that the media on which the Licensed Materials are recorded are defective, the Licensor will replace the media without charge, as long as the original media are returned to the Licensor, with satisfactory proof of purchase and date of purchase, within the Warranty Period. This warranty is limited to you as the licensee and is not transferable. [. . . ]