SONET/SDH Path Delay

Anue Path Delay Network Emulators are ideal for SONET VCAT network emulation in a lab environment. Path Delay Network Emulators create individual path level delays identical to those that occur during the transmission of SONET/SDH signals.

Does your solution:

• Work properly in the presence of differential delay?
• Handle bit errors?
• Detect and respond properly to LOS/LOF alarms?

Anue Path Delay Network Emulators:

• Run 100% line rate traffic from 155Mbps to 10Gbps
• Can be automated or operated interactively, locally or remotely
• Provide accurate network emulation down to one-bit time increments
• Enable delay of 250ms or more at all bit rates

Maui and Hawaii Network Emulation Hardware Platform

The SONET/SDH Path Delay Network Emulation tool is available on a 2U rack-mount chassis that supports up to 7 software loads. There are two platforms available:

• The Maui platform supports up to four blades and data rates up to 2.6Gbps.
• The Hawaii platform supports up to two blades and data rates up to 11.3Gbps.

 Supported rates

• OC-3/STM-1 (155.52Mbps)
• OC-12/STM-4 (622.08Mbps)
• OC-48/STM-16 (2.488Mbps)
• OC-192/STM-64 (9.953Mbps)

 Delay

• Delay the path layer with absolute delay from 40us to 320ms and differential delay from 0ms to 319ms (first to last path) in 154.32ns increments (one pointer position).
• Individually delay each path contained in non-concatenated signals.
• Fully supports Telcordia GR253/2000 Table 5.1 for payload concatenation. For example, differentially delay 48 separate STS-1 paths, or 4 separate STS-12c paths, or 8 STS-3c paths plus 24 STS-1 paths.
• Introduce delay with minimal effect on overhead bytes.
• All defined and reserved overhead bytes are conveyed transparently, except that B1/B2 are recalculated and H1/H2/H3 are adjusted. SS bits are passed transparently.
• Received pointer adjustments are delayed by the same amount as the associated SPE data.
• Delayed paths are reassembled into an OC-3, OC-12 or OC-48 signal logically identical to the original.
• Dynamically change delay of each path simultaneously and independently through pointer increment/decrement without affecting data.

 Error

• Set error rates from 10^-12 to 10^-2.
• Inject errors on individual paths or entire SONET frame.
• Simulate AIS-P/UNEQ-P, loss of signal or loss of frame under user or program control.

 Operation

• Configure via a front panel LCD control for standalone operation
• Configure remotely via an Ethernet control port
• Interactive: Browser-based GUI with save/load capability
• Automated: Powerful TCL script library

SONET/SDH Path Delay Software Loads for the Maui and Hawaii Platform

Learn more about the differences between Anue's DG Signal Delay and PD Path Delay network emulation products by viewing SONET Signal Delay/Path Delay FAQ

Note: Up to 7 software loads for different protocols (SONET, OTN, Ethernet, Fibre Channel, CPRI) can be combined on the same system. A combo network emulation system can easily switch between different features, data rates and protocols, simplifying testing and leveraging your investment. [view products: link to Combo Table page]

White Paper: Performing Next Gen SONET Testing using a network delay emulator [PDF]