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Configuring TDM CESoPSN on ACX Series Routers Overview

 

Structure-aware time division multiplexed (TDM) Circuit Emulation Service over Packet-Switched Network (CESoPSN) is a method of encapsulating TDM signals into CESoPSN packets, and in the reverse direction, decapsulating CESoPSN packets back into TDM signals. This method is also termed as Interworking Function (IWF). The following CESoPSN features are supported on Juniper Networks ACX Series Universal Metro Routers:

Channelization up to the DS0 Level

The following numbers of NxDS0 pseudowires are supported for 16 T1 and E1 built-in ports and 8 T1 and E1 built-in ports, where N represents the time slots on the T1 and E1 built-in ports.

16 T1 and E1 built-in ports support the following number of pseudowires:

  • Each T1 port can have up to 24 NxDS0 pseudowires, which add up to a total of up to 384 NxDS0 pseudowires.

  • Each E1 port can have up to 31 NxDS0 pseudowires, which add up to a total of up to 496 NxDS0 pseudowires.

8 T1 and E1 built-in ports support the following number of pseudowires:

  • Each T1 port can have up to 24 NxDS0 pseudowires, which add up to a total of up to 192 NxDS0 pseudowires.

  • Each E1 port can have up to 31 NxDS0 pseudowires, which add up to a total of up to 248 NxDS0 pseudowires.

Protocol Support

All protocols that support Structure-Agnostic TDM over Packet (SAToP) support CESoPSN NxDS0 interfaces.

Packet Latency

The time required to create packets (from 1000 through 8000 microseconds).

CESoPSN Encapsulation

The following statements are supported at the [edit interfaces interface-name] hierarchy level:

  • ct1-x/y/z partition partition-number timeslots timeslots interface-type ds

  • ds-x/y/z:n encapsulation cesopsn

CESoPSN Options

The following statements are supported at the [edit interfaces interface-name cesopsn-options] hierarchy level:

  • excessive-packet-loss-rate (sample-period milliseconds)

  • idle-pattern pattern

  • jitter-buffer-latency milliseconds

  • jitter-buffer-packets packets

  • packetization-latency microseconds

show Commands

The show interfaces interface-name extensive command is supported for t1, e1, and at interfaces.

CESoPSN Pseudowires

CESoPSN pseudowires are configured on the logical interface, not on the physical interface. So the unit logical-unit-number statement must be included in the configuration at the [edit interfaces interface-name] hierarchy level. When you include the unit logical-unit-number statement, circuit cross-connect (CCC) for the logical interface is created automatically.

Related Documentation