Xblue Networks X-50 - Manual (Page 25)

XBLUE Networks 25
System Specifications
2
TABLE 2.7 X-50 System Capacities
Capacity Interface Port Description
6 FXO RJ11 Allowing 6 PSTN lines and simultaneously sessions
1 FXS RJ11 Connected a Single Line (Analog) Telephone
1 USB USB Connect a printer to be shared by devices on the LAN
1 Wireless LAN LAN - 802.11b, 802.11g and 802.11n
1 LAN RJ45 10/100 Local Area Network
1 WAN RJ45 100/1000 Wide Area Network (for remote workers or offices)
8 SIP Trunks Interface with up to 8 SIP Trunks
4 AA & VM Interfaces with Auto Attendant and Voice Mail allowing it to process up to 4
simultaneous calls, which is shared with all telephone lines and endpoints
24 LAN/WAN RJ45 Telephone Endpoints - Non Blocking
10 WAN RJ45 Office to Office - Voice Network (Campus Environment)
14 Concurrent Calls (Telephone Lines and SIP Trunks)
40 Call Routing Tables
25 Telephone Endpoint voice mailboxes with Personal OutGoing Message (OGM)
40 Virtual Voice mailboxes with personal OutGoing Message (OGM)
10 Single Digit Dialing Menus with Menu Tree Routing
10 Day time OutGoing Message (OGM)
10 Lunch (Noon) - OutGoing Message (OGM)
10 Night time OutGoing Message (OGM)
10 Holiday OutGoing Message (OGM)
10 Temporary Outing Message (OGM)
TABLE 2.8 VoIP & Signalling Protocols
Signaling Documented Protocol Description
G.168 ITU-T G.168 Echo Canceller was designed and used to address and standardize the
performance of echo cancellers in the PSTN.
G.711 ITU-T G.711 Highest Bandwidth/Lowest Compression - best voice quality. A voice
encoder that compresses 64K bit stream to an 8K per second sampling
rate, with a typical algorithmic delay of 0.125ms. G.711 is used when
transmitting Music, FAX’es and DTMF tones because it is very reliable.
G.723.1 ITU-T G.723.1 Intermediate Bandwidth/Intermediate Compression - minimal reduction in
voice quality. A voice encoder that compresses voice in 30ms frames, with
a look-ahead of 7.5ms, with a typical algorithmic delay of 37.5ms. G.729a
uses very low bandwidth because it samples at 8kHz/16-bit (240 Samples
for 30ms frames).
G.729.a/b ITU-T G.729a Lowest Bandwidth/Highest Compression and least complex protocol, with a
hybrid speech reproduction quality by use of an Algebraic Code Excited
Linear Predication (ACELP) that reproduces a voice encoder that
compresses voice in 10ms frames, with a look ahead of 5ms per frame, and
atypical algorithmic delay of 15ms, per frame. It operates at 8k bits, and
can be used with 6.4kbits and 11.8k bits, with a marginal reduction in voice
quality.