Press Release: GL Enhances ML PPP & PPP
Emulation & Analysis
Gaithersburg, Maryland, USA - July 15, 2010 - GL Communications Inc., announced today the enhanced
ML PPP Analyzer and MC ML PPP Emulator protocol tools that emulate and analyze Point-to-Point (PPP), Multi Link Point
to Point (ML PPP), and Multi Class ML PPP protocols. Speaking to newsmen, Mr. Karthik Ramalingam, Project Manager at
GL, said,Ē The ML PPP Analyzer captures PPP protocols exchanged between the two nodes over T1 E1 links & provides
detailed analysis, which includes distribution of protocols, protocol fields, frame lengths and frame status. The ML PPP
Analyzer has the ability to decode PPP, ML PPP and MC-ML PPP packets.
Enhanced ML PPP Analyzer with Packet Data Analyzer (PDA) is a real-time IP and VoIP analyzer that non-intrusively
analyzes and captures live IP traffic, and segregates them into SIP / H323 / Megaco / MGCP calls. It also collects statistics,
CDRs, detailed protocol traces, ladder diagrams, and a host of other useful information about VoIP calls. Its real-time
nature makes it an outstanding tool for live monitoring of VoIP traffic as well as long-term traffic statistics gathering. It
can also monitor, report, analyze, and capture calls for infinite time, limited only by the finite space of your hard disk or
network hard drive! Ē.
He added, ďGL's flexible and versatile MC ML PPP Emulator is both GUI and script based. The application has been
added with Multiplexing feature that sends multiple PPP encapsulated packets in a single PPP Multiplexed frame, and
each PPP encapsulated frame within a multiplexed frame is called a PPP sub-frame. And sub-frames are concatenated
to a make a single PPP multiplexed frame by inserting a delimiter before the beginning of each sub-frame, and as a
result, the PPP encapsulation overhead per packet is reduced.
The MC ML PPP Emulator now supports RTP compression, and during NCP negotiation phase of PPP, RTP compression
sub-option is used to enable the RTP compression, and once RTP compression sub-option is negotiated, IP/UDP/RTP
compression will be enabled conforming to RFC 2508Ē.
Important features of Packet Data Analyzer (PDA)
- Supported protocols - SIP (Session Initiation Protocol RFC 2543 and RFC 3261), Megaco RFC 3525, Megaco RFC 3015,
MGCP, H323/H225, and RTP
- Full RTP Analysis with audio capture/playback supported for all common codecs
- Provides the registration summary of each SIP registration including the user agent, registrar, status, registered time,
expiry time, time to live, and remaining time
- Supports saving the selected calls from traffic analyzer into *.HDL or *.PCAP formats
- T.38 Analysis - The application has the call graph and T.38 ladder diagram display. User can decode T.38 frames
received over VoIP calls and can have ladder diagram for T.38 traffic flow, reassemble the fragmented data and to identify
the T.30 message from it
- Triggered Actions and E-mail Support
- Record audio and video data of a session to a file in QuickTime format
- R factors/MOS supported for more audio and video codecs: Mulaw, Alaw, G726 (40 kbps), G726 (32 kbps), G726
(24 kbps), G726 (16 kbps), GSM610, G729, G729B, AMR, ILBC (20 msec), ILBC (30 msec) and SPEEX, EVRC, EVRCB
- Call Quality Of Service (QOS) for all calls with E-Model based (G.107) Mean Opinion Score (MOS) and R-factor with
individual and summary statistics presented in graphical and tabular formats
- Alert Summary tab provides summary of the each alerts that have occurred during the analysis. Each summary has the
following columns: Call#, Protocol, Message, Type, Threshold, Value, Caller, Callee, CallId
- Support for H.263+ provides video capture and videoconference monitoring capability
For comprehensive information on the product, please refer to ML PPP Analyzer
Important existing features of MC MLPPP Emulator:
- ML PPP Emulator as a Router
The Emulator allows users to setup routing table by configuring IP-Address and Mask. Once configured, the Emulator
forwards the IP packets which match routing criteria over T1 E1 links. Emulator respond to all ARP requests whose IP
addresses present in routing table.
The emulator allows mapping of user defined class of service into ML PPP class/ PPP Link based on length, source IP
address, destination IP address and Type Of Service of the received IP packets, set in priority dialog table.
- ML PPP Emulator as a Bridge
When the emulator is configured to act as bridge between two networks, all ARP and traffic (checked against the priority
table) received from the network is encapsulated as BPDU (Bridging Protocol Data Unit) and streamed over T1 E1 links. The
Emulator on another network removes BPDU header, either converts to Ethernet traffic or adds Ethernet header and streams
to the destination.
- IP compression
MC ML PPP Emulator supports the following IP compression standards: Van Jacobson Compression and IP Header
MC ML PPP Emulator supports various impairments at PPP layer - CRC error, frame error, frame duplication, and more.
Also supports various Fragment/Packet impairments for each Class at ML PPP level.
For comprehensive information on the product, please refer to MC ML PPP Emulator
About GL Communications Inc
Founded in 1986, GL Communications Inc. is a leading supplier of test, monitoring, and analysis equipment for TDM,
Wireless, IP and VoIP networks. Unlike conventional test equipment, GL's test platforms provide visualization, capture,
storage, and convenient features like portability, remotability, and scripting.
GLís TDM Analysis & Emulation line of products includes T1, E1, T3, E3, OC-3, OC-12, STM-1, STM-4, analog four-wire,
and analog two-wire interface cards, external portable pods, and complete system solutions. Capabilities include voiceband
traffic analysis and emulation across all traffic types (voice, digits, tones, fax, modem), all protocols (ISDN, SS7, GR-303,
Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, LTE, etc.), and with capacities up to thousands of channels. Our newest products
provide astonishing capacity and capture capability up to and including gigabit speeds.
GLís VoIP and IP products generate / analyze thousands of calls and traffic simultaneously with traffic types such as
frames, packets, voice files, digits, video, tones, noise, and fax. Almost all codecs are supported including G.711, G.729,
AMR, EVRC-A,B,C, GSM, iSAC, and many more. Additional features include visual analysis, real-time listening, and recording.
The product line also includes Ethernet / IP Testing capability that simulates and checks frame transport and throughput
parameters of Ethernet and IP networks, including delay, errors and other impairments.
GL's Voice Quality Testing (VQT) product line complements all of GL's products. Using ITU-standard algorithms (PAMS,
PSQM, and PESQ), GL's VQT provides a widely accepted solution for assessing voice quality in the telecom industry. Voice
Quality Testing across multiple networks (T1, E1, T3, E3, OC-3, OC-12, VoIP, Wireless, and Landline) are all available.
GLís Wireless Products perform protocol analysis and voice quality assessment on GSM, CDMA, UMTS, and LTE
networks. Connections can be made to any wireless phone with automated call control, GPS mapping and real-time signal
GLís Echo Canceller testing solutions provide the broadest range of simulation and analysis, including line and acoustic
echo. GLís compliance testing per G.168. G.167 and P.340 across TDM, IP, VoIP and Wireless networks is widely accepted
in the industry.
GLís wireless VQT solutions help assessing impairments to voice quality such as poor mobile phone quality, voice
compression and decompression algorithms, delay, loss and gain in speech levels, noise, acoustic and landline echo, and
other distortions are easily assessed and accurately measured.
GLís Handheld data testers can test a wide variety of communications facilities and equipment including T1, fractional
T1, E1, fractional E1, T3 and E3 modems, multiplexers, CSU, DSUs, T1 CSUs, DTUs, NTUs and TIUs and more. The testers
provide convenience, economy, and portability for almost any interface, including RS232, RS-422, RS-530, X.21, T1, E1,
T3, E3, and many others.
GLís Network Surveillance and Monitoring products include Probes for TDM, IP, VoIP, ATM, and Wireless networks. An
open standards based approach provides a scalable, feature rich, real-time access to network characteristics. Centralized
or distributed access, efficient transport and database loading allow compatibility with 3rd party and standards based
For more information about GL's complete line of products,
Back to Press Releases Index Page
Phone: 301-670-4784 ext. 114