Since I use testing tools in the labs all the time to test VoIP products, I have a strong affinity for good testing tools. GL Communications has an excellent line of telecom testing tools - everything from T1/E1/T3/OC-3/STM-1 analysis to VoIP Analysis/Simulation and Voice Quality Testing. I've used GL Communications' equipment in the past and in fact reviewed their DCOSS v4.0 product in 2000.
Well, today they announced the release of DCOSS 5.10. The DCOSS equipment is ideal for simulating and testing advanced telecom networks/products including switches, gateways, and transmission systems. It is also used for verifying T1/E1 signaling protocols of new systems. These available protocols include T1/E1 CAS, PRI ISDN, SS7, and SS5. The Digital Central Office Switch Simulator (DCOSS) provides carriers and other operators with the ability to test virtually all elements of their networks. In addition, it provides a user-friendly GUI with which users can capture the performance of networks in wide variety of scenarios as illustrated in the figure below:
The DCOSS version 5.10 has the following new features and enhancements:
Simultaneous Transmission/Reception of voice files
DCOSS version 5.10 now allows simultaneous transmission/reception of audio data. This new feature is available with Manual Calling, Bulk Calling, and Bulk Call scripting functions.
Remote Client Access
DCOSS Remote Client feature has now been enhanced to allow users to stream audio files currently located on the DCOSS server to the remote clients' speakers. It provides user-friendly interface to explore the directories ofthe DCOSS server and remote clients, allowing users to easily load or save data at the desired location.
Remote Server Control
DCOSS has been enhanced to support Remote Access Server (RAS) functionality using a Modem. It can be configured to perform RAS functionalities with just a single timeslot or, if desired, the same functions can be configured to utilize up to 96 timeslots simultaneously.
Additions in Signaling System 7
Initial Address Message (IAM) has been enhanced to support Redirecting Number and Redirection Information. Also added is the ability to manually generate CPG messages within an established SS7 call.
Event Logging in Resource Management
DCOSS 5.10 now provides additional logging capabilities by allowing user to automatically capture events to user-defined text files. This information can be saved and later loaded (using Master Configuration) for quick access.
Support for additional Protocols
DCOSS is enhanced to support Australian MFC-R2 as an addition to the E1 MFCR2 protocol variants.
The new additions in the DCOSS hardware are:
- DET002 and DET004 (software selectable dual/quad T1/E1 digital trunk boards)
- DR040TE (4 link SS7 board with software selectable dual T1/E1 trunks)
- DR050TE (16 link SS7 board with software selectable dual T1/E1 trunks)
Boards no longer supported by the DCOSS include:
- ISA SS7 board
- ISA 8/24 Port Analog Station card
- GR-303 board
- BRI-U Interface board
Enhancements in Scripting and Switch-routing
The switch routing now includes options for the user to add a prefix, an extension or change the called/calling numbers during a switchcall operation as required. Further, the enhanced scripting features in DCOSS allow auto manipulation of the parameters within the script functions.