Telesis X1: Large Capacity TDM - IP Telephony Switch

 Hallmarks

• Carrier class system
• All-in-one solution for TDM and IP Telephony
• 14,400 TDM ports
• 8,192 IP users
• 2,160 IP-TDM gateway channels (concurrent IP to TDM and TDM to IP calls)
• SIP, H.323, xSIP support
• SS7, DSS1, QSIG, R1, R2, CAS, CIS V5.2 support
• Integrated DVR (digital voice recorder) for:
  • Personal conversation recording
  • Automatic port recording
  • Voice Mailing
• ACD (automatic call distribution)
• API server
• Advanced routing algorithms for both IP and TDM calls
• Alternate routing
• Numerous user services
• Web based management
• Advanced billing system and reporting for billing, statistics, management, and alarming
• Hot stand-by redundancy

Carrier class system. The X1 TDM - IP Telephony Switch.

State-of-the-art Technology

The Telesis X1 TDM - IP Telephony Switch has an architecture for NGN (next generation networks) migration with its integrated packet and circuit switching technology. The capacity is sufficient or easily expandable to ensure the availability of capacity needed for future new functions or services to be introduced.

The Telesis X1 TDM - IP Telephony Switch is capable of inter-working between all its TDM and IP signaling/protocol schemes. Each variant of incoming and outgoing lines associated with a signaling system generates and receives forward and backward  inter-working telephony events according to on-line, real-time procedures specified for each signaling system in the relevant standards and recommendations.

Various local and remote users of the X1, which can be IP or TDM.

System Capacity and Applications

Telesis X1 TDM - IP Telephony Switch capacity depends on the demands and the place of the system in the network. Particular values are defined for each system. The X1 allows, in an economic way, the realization of IP and TDM switching system in the capacity range of thousands of subscriber lines, thousands of trunks, and thousands of IP users. In order to facilitate expansions of the system in future, the X1 TDM - IP Telephony Switch is built on a modular principle. It is possible to distinguish functional units that can be replaced and/or expanded.

The Telesis X1 TDM - IP Telephony Switch has a modular structure. The installation of the system or expanding an already operating one by adding subscriber and/or trunk line interfaces is simple and fast. The X1 TDM - IP Telephony Switch allows thousands of H.323 endpoints to be registered into its integrated gatekeeper. These endpoints may be IP trunk routes and/or H.323 hard/soft phones with their own IP addresses. The X1 can also register to multiple gatekeepers simultaneously. Similarly, the X1 allows thousands of SIP user agents to be registered into its integrated registrar. These user agents may be IP trunk routes and/or SIP hard/soft phones with their own IP addresses. The X1 can also register to multiple registrars simultaneously. In an X1, TDM circuits, H.323 endpoints, and SIP user agents exist altogether.

Furthermore, Telesis proprietary xSIP (eXtended SIP) protocol allows value added services to be functional over IP.

DTS821 Digital Phone in gray color

DTS821S Digital Phone in white color

DTS200S Digital Phone in white color 

ITS821 IP Phone and XPhone IP Softphone (PC edition) have easy-to-use access menu keys and numerous dedicated keys for various telephony tasks within the X1. 

XPhone IP Softphone (Mobile edition) for Pocket PC Phone and Smartphone.

Another challenging feature available with Telesis X1 TDM - IP Telephony Switch is the Telesis WebPhone. It is a SIP softphone or client applet hosted in the X1. The applet can be run from any java enabled web browser. Since it is a standard java applet, no software installation is required or no plugin is installed. The applet is just loaded temporarily onto the client`s browser. It can be used wherever is an access to the Internet. A web browser, a microphone, and a headset are sufficient to make calls. 

Telesis WebPhone Main Page for the Browser

Telesis WebPhone is completely an independent application. It works with all main browsers such as Internet Explorer, Mozilla Firefox, Opera, Google Chrome, or Safari. The feature empowers web sites of Telesis X1 owners. Deploying the webphone on a web site is just an issue of placing a simple html link to the hosting Telesis X1 system.

Utilities for System Owners and Administrators

XTools is a next generation utility software developed by Telesis A.S. to be used with Telesis X1 TDM - IP Telephony Switch. Moreover, it is freeware.

Experts as well as novices may get the benefits of XTools. An easy to use and flexible toolkit allows system owners and administrators:

• to discover Xymphony compatible Telesis equipment in the local network and edit their settings
• to trace and capture telephony events and call control messages of selected TDM users
• to download CMDR (Call message detail recording) records
• to download automatic voice recordings 
• to generate formatted CMDR reports 
• to trace, select, view or backup CMDR database

to trace, select or play voice recordings

By means of expansions and adaptations it is possible to use the X1 as:

• Carrier grade Large Capacity TDM and IP Telephony System
• Hybrid TDM and IP Telephony System for large enterprises
• SSP, Service Switching Point for SS7
• STP, Signal Transfer Point for SS7
• Central Office
• Toll switch
• Tandem switch
• Transit switch

Optional audio visual alarm panel of the X1 designed for system administrators

Some IP Telephony Applications

10/100 BaseT ethernet interfaces on the Telesis X1 TDM - IP Telephony Switch provide numerous IP Telephony applications and system management solutions. Some of these are:

• Web based system management
• CMDR (detailed call records) collection
• System alarm and warning messages collection
• Statistics data collection
• Voice (conversation) records collection
• Xymphony API server and client communication
• H.323 protocol support. Connections between the system and H.323 entities.
• SIP Session Initiation Protocol support. Connections between the system and SIP entities.
• xSIP (eXtended SIP). Connections between the system and xSIP terminals

TDM and IP Interfaces or Users

The Telesis X1 TDM - IP Telephony Switch supports, at least, the following hardware interfaces and signaling:

• analog subscribers (extensions, FXS, central-battery trunks in some other terminology)
• analog DC loop trunks (FXO in some other terminology)
• 4B+1D digital subscribers
• SIP  entities
• H.323 entities
• RDTT ports (ring-down tie-trunks, local-battery trunks in some other terminology)
• analog E&M trunks
• BRI ISDN S0 ports (basic rate interface - user)
• BRI ISDN T0 ports (basic rate interface - trunk)
• BRI ISDN Uk0 ports
• E1 CAS 2 bit CIS signaling interfaces
• E1 CAS 1 bit E&M emulating interfaces
• E1 CAS 2 bit ITU-T R1 signaling interfaces
• E1 CAS 2 bit ITU-T R2 signaling interfaces
• E1 ISDN DSS1 Primary rate NT signaling interfaces
• E1 ISDN DSS1 Primary rate TE signaling interfaces
• E1 ISDN QSIG Primary rate NT signaling interfaces
• E1 ISDN QSIG Primary rate TE signaling interfaces
• E1 ITU-T SS no:7 ISUP signaling interfaces
• E1 ETSI V5.2 Local Exchange LE signaling interfaces
• E1 ETSI V5.2 Access Network AN signaling interfaces

Technical Specifications

General
Revision	5
Operational software	Xymphony X1
Maintenance and administrative software	Web based
Operating voltage	110 VAC, 220 VAC,48 VDC
CPU Type	Half-size industrial
TDM Switching Matrix	4096 x 4096
Hot Stand-by Redundancy	Yes
Analog subscriber loop impedance	3,000 ohms
Ethernet interfaces	10/100 BaseT
Caller ID ETSI FSK modem	Yes
Integrated CMDR buffer	Yes
Integrated DVR (Digital Voice Recorder)	Yes
DVR recording capacity	100 hours
DVR recording channels	64
DVR playing channels	64
Auto port voice recording buffer	400 hours
Auto port voice recording channels	120
Xymphony API server	Yes
FTP client	Yes
Conference hardware	Yes
DTMF transceivers	Yes
MFR1 transceivers, ITU-T Q.320	Yes
MFCR2 transceivers, ITU-T Q.441	Yes
HDLC transceivers	Yes
ANI transceivers	Yes
Pulse shuttle (R1.5) transceivers	Yes
Real-time charging	Yes
A-Party analysis	Yes
B-Party analysis	Yes
Subscriber services	Yes
Credited subscribers	Yes
Remote access	Yes
Signaling interworking	Yes
Programmable tones	Yes
Applications
Pure IP Telephony	Yes
Pure TDM Telephony	Yes
Hybrid IP-TDM Telephony	Yes
Interfaces (max.)
Analog subscribers	14,400
Digital subscribers	960
Analog DC loop trunks	3840
Analog E&M (two- or four-wire)	3840
RDTT (Ring Down Tie Trunk, local battery)	3840
BRI ISDN S0	2880
BRI ISDN Uk0 (Line code 2B1Q)	2880
PRI ISDN	120
E1 interfaces (ITU-T G.703)	120
SIP user agents	8192
H.323 endpoints	8192
Telesis xSIP users	512
TDM Signaling
Dial-pulse dialing from analog subscribers	Yes
Dial-pulse dialing to analog CO trunks	Yes
DTMF dialing from analog subscribers	Yes
DTMF dialing to analog CO trunks	Yes
Caller ID transmission on analog subscribers	Yes
Caller ID detection on analog CO trunks	Yes
Pulsed line/pulsed address on E&M	Yes
Continuous line/DTMF address on E&M	Yes
Single-bit pulsed line signaling types on E1	Yes
Single-bit continuous line signaling on E1	Yes
MFR1 signaling on E&M	Yes
MFCR2 signaling on E&M	Yes
MFR1 signaling on E1	Yes
MFCR2 signaling on E1	Yes
ISDN (Euro ISDN, DSS1), ETSI EN 300 403	Yes
ISDN Supplementary services: 3PTY, AOC, CCBS, CCNR, CFU, CFNR, CLIP, CLIR, COLP, COLR, ECT, DDI, HOLD, MCID, MSN, UUS	Yes
ISDN (QSIG), ECMA-143 PISN	Yes
V5.2 LE protocol, ETSI EN 300 347	Version 2
V5.2 AN protocol, ETSI EN 300 347	Version 2
SS7 ISUP (CCS no.7), ETSI EN 300 356, ITU-T	Yes
CIS Countries - Russia
Local  trunks SL, Connection line CL	Yes
Toll-connecting trunks ZSL, Ordered connection line OCL	Yes
Toll-switched trunks SLM, Toll connection line TCL	Yes
Two-bit CAS signaling	Yes
Single-bit CAS signaling	Yes
Two-, four-wire analog signaling	Yes
Single-frequency signaling (1VF)	Yes
Multifrequency signaling:Pulse packet 1, 2, 3a, 3b	Yes
Multifrequency shuttle signaling:Pulse shuttle, R1.5	Yes
Pulse (decadic) signaling	Yes
ANI request and reception	Yes
ANI response (generation)	Yes
Unilateral call clearing	Yes
Bilateral call clearing	Yes
Calling party category translation	Yes
IP Telephony
Interfaces	10/100 BaseT
H.323 protocol, Version 5	Yes
SIP Session Initiation Protocol, RFC 3261	Yes
Telesis xSIP (eXtended SIP) protocol	Yes
FTP (File Transfer Protocol)	Yes
Adjunct protocol	Yes
XDP (Xymphony Discovery Protocol)	Yes
Dynamic DNS update client service	Yes
G.711 audio codec	Yes
G.723.1 (5.3 and 6.4kbps) audio codec	Yes
G.729, G.729A audio codec	Yes
G.711 frame length	10 to 90msec
G.723.1 frame length	30 to 90msec
G.729, G.729A frame length	10 to 90msec
Silence Suppression (VAD)	Yes
Echo Canceler G.168-2002	Yes
QoS (Tos and Diffserv)	Yes
T.30 Fax Pass-through for SIP	Yes
Integrated H.323 gatekeeper	Yes
Integrated SIP registrar	Yes
H.323 endpoints, which can register	8192
SIP user agents, which can register	8192
xSIP users, which can register	512
IP-TDM gateway channels	2160
Programmable ports / sockets	Yes
MD5 authentication	Yes
H.235 Baseline Security Profile	Yes
H.235 Baseline Security Profile with integrity	Yes
Digest authentication	Yes
Audio (voice) encryption	AES-256
Softswitch capability	Yes
IP to TDM gateway capability	Yes
TDM to IP gateway capability	Yes
H.450 supplementary services	Yes
SIP supplementary services	Yes
API (Application Program Interface)	Yes
Fidelio Interface Application Specification protocol	Yes
Automatic conversation recording for VoIP calls	Yes
Hosting Java SIP client applet	Yes

Related Readings

We recommend you to visit Telesis Wiki Pages for technical readings.