ABRIDGED DATA SHEET

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108

Rev: 101708

8 of 13

TDMoP TDM Interfaces

•

Supports single high-speed E3, T3 or STS-1 interface on port 1 or one (DS34S101), two (DS34S102), four

(DS34S104) or eight (DS34S108) E1, T1 or serial interfaces

•

For single high-speed E3, T3 or STS-1 interface, AAL1 or SAToP payload type is used

•

For E1 or T1 interfaces, the following modes are available:

o

Unframed – E1/T1 pass-through mode (AAL1, SAToP or HDLC payload type)

o

Structured – fractional E1/T1 support (all payloads)

o

Structured with CAS – fractional E1/T1 with CAS support (CESoPSN or AAL1 payload type)

•

For serial interfaces, the following modes are available:

o

Arbitrary continuous bit stream (using AAL1 or SAToP payload type)

o

Single-interface high-speed mode on port 1 up to STS-1 rate (51.84 Mbps) using a single

bundle/connection.

o

Low-speed mode with each interface operating at N x 64 kbps (N = 1 to 63) with an aggregate rate of

18.6Mbps

o

HDLC-based traffic (such as Frame Relay) at N x 64 kbps (N = 1 to 63) with an aggregate rate of

18.6Mbps).

•

All serial interface modes are capable of working with a gapped clock.

TDMoP Bundles

•

64 independent bundles, each can be assigned to any TDM interface

•

Each bundle carries a data stream from one TDM interface over IP/MPLS/Ethernet PSN from TDMoP source

device to TDMoP destination device

•

Each bundle may be for N x 64kbps, an entire E1, T1, E3, T3 or STS-1, or an arbitrary serial data stream

•

Each bundle is uni-directional (but frequently coupled with opposite-direction bundle for bidirectional

communication)

•

Multiple bundles can be transported between TDMoP devices

•

Multiple bundles can be assigned to the same TDM interface

•

Each bundle is independently configured with its own:

o

Transmit and receive queues

o

Configurable receive-buffer depth

o

Optional connection-level redundancy (SAToP, AAL1, CESoPSN only).

•

Each bundle can be assigned to one of the payload-type machines or to the CPU

•

For E1/T1 the device provides internal bundle cross-connect functionality, with DS0 resolution

TDMoP Clock Recovery

•

Sophisticated TDM clock recovery machines, one for each TDM interface, allow end-to-end TDM clock

synchronization, despite the packet delay variation of the IP/MPLS/Ethernet network

•

The following clock recovery modes are supported:

o

Adaptive clock recovery

o

Common clock (using RTP)

o

External clock

o

Loopback clock

•

The clock recovery machines provide both fast frequency acquisition and highly accurate phase tracking:

o

Jitter and wander of the recovered clock are maintained at levels that conform to G.823/G.824 traffic or

synchronization interfaces. (For adaptive clock recovery, the recovered clock performance depends on

packet network characteristics.)

o

Short-term frequency accuracy (1 second) is better than 16 ppb (using OCXO reference), or 100 ppb

(using TCXO reference)

o

Capture range is ±90 ppm

o

Internal synthesizer frequency resolution of 0.5 ppb

o

High resilience to packet loss and misordering, up to 2% without degradation of clock recovery

performance

o

Robust to sudden significant constant delay changes