Datasheet

____________________________________________________ DS34S101, DS34S102, DS34S104, DS34S108
Rev: 032609 16 of 198
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 unidirectional (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