Xcsl/Xgen feature overview

Signaling types: SIP-User (UNI) and SIP-trunking (NNI) model, including Business Trunking SIP RFC3261 (emulates Tilgin ATA for Voice Emulation and Polycom IP phone for IP-Centrex, openimscore compatible) , UDP, TCP Supports multiple sessions per SIP registration (like multi-line business gateway or used in call-waiting/hold scenarios) Call Hold, Call Waiting RFC3264 and RFC2543, CallTransfer (REFER), Supports Diversion RFC5806 Presence client RFC3903, RFC3863 (under development) Megaco/H.248 (emulates ISAM-V DSLAM for copper) Analogue lines (PSTN) via Xpots driver (can handle multiple lines) Mobile phones (GSM) via Xgsm driver (can handle multiple phones, can also do SMS) Configurable signaling stack, messages and timing via webportal Media testing: RTP streams end-to-end G.711 alaw, ulaw Codec Measures jitter, packetloss, delay etc... Sending and receiving inband DTMF for media path verification and IVRs Supports RFC2833 DTMF Telephony Event verification ITU P.862 PESQ (Perceptual evaluation of speech quality) measurements * Media settings configurable via webportal OSS/BSS: Interface to NorthBoundClientSimulator on VSAM for provisioning testing Interface to SAM or X-Authority for provisioning testing Interface to Comptel Billing Mediation Billing record analysis platform (adjustable per project/network/customer) Analysis: For each call, per type of test, per (hardware) unit Trends and passfail graphs, per minute, hour... (e.g. to measure recovery time in redundancy testing) Determine "common factor" of failing calls (helps to pinpoint source of a problem) Provides detailed tracing capabilities and logfiles Built-in signaling trace tool Xtrace Supports correlating traces end-to-end through the network Debugging on individual lines via Xwebphone Integrated with Wireshark (starting wireshark v1.0 which has xcsl support) Collects detailed SIP statistics and correlates to test events For some examples: click here Probes for integration with Nagios monitoring solution Scripting language: Allows to program almost every possible call scenario System comes with a complete set of tested and supported scenarios User can program own scripts to add more scenarios Offers framework to group and organize testscripts Automatically generates testcases from project settings Easy to program feature testing, like Call Forwarding, CLIP etc... Supports IP-Centrex tests like huntgroups, extention dialplans Supports flexible setup of dialingschemes Able to generate CDR file to compare with real billing sytsems

System: Database driven test-resource manager Reusable test-scripts using high-level testplan programming language Very scalable (hardware wise, can grow by adding boxes) Emulated endpoints can be (geograpically) distributed in your network. Runs on Linux (preferably 64bit Suse 11.2+), Runs on off the shelf hardware, Dual Core 64bit, 1.6Ghz, 2Gbyte RAM, 500 Gb disk, 2 Eth 100Mb ports or better Preferably multiple ethernet ports on PC for flexible deployment Uses USRobotics modem hardware for Xpots, can host many PSTN lines per host Security: Individual user login/password User and Role based access and logging Strong firewall access rules to harden both the Xgen and Xcsl servers. Automatic firewall mechanism after system boots. Hardening and Stripping according to Operating System recommendations Documentation: Extensive online manual on Xcsl installation, resource database provisioning, csl scripting and analysis Comprehenisve Xgen installation manual and documentation on implemented stacks Available Training: Quick start half day Xcsl/Xgen introduction Xcsl tester/operater workshop Xcsl administrator workshop, includes setup and resource database configuration Detailed debugging and test analysis Xcsl/Xgen system specialist, including xcsl interface stack development User-interface: Fully web-based end-user interface Supports user access control (login/passwd) and role based access On-they-fly adjustment of script timers Allows pre-defined schedules (stabilityruns) Features to schedule, start, stop, suspend, resume testing (all or some groups of testing) Built in usermanual for Xcsl (html but also available as pdf) Detailed documentation on the Xgen signaling stacks Control and Reporting from external systems possible via ODBC interface

Components:
Xcsl consists of the following components:

• Test resource manager, a database to keep track of what all subscribers and other resources in the test environment are used for and what their attributes are.
• Test Scripts, written in xCSL language (CSL = Call Specification Language). It is a high-level script language to do things like offhook, dial digits, onhook.
• Xcsl processes, which take the resources and the scripts and send instructions to an underlying signalling stack.
• Signalling stacks, also called callgenerators. They are not really part of xCSL but are controlled by Xcsl over a proprietary protocol. There are Xgen interfaces for Megaco/H248, for SIP based signaling systems including Voice Emulation, for POTS/PSTN and for OCI/CAP (Toolbar).
• Auxilary tools for network monitoring, analysis, correlation are available (Xtrf, Rasmon) for in depth debugging and problem analysis.
• Optionally, product Xtas (Telephony Application Server for testing in IMS environments) can be used in your test setup.

The builder:

Dick Gooris:

(Several Patents Pending)