Pos On The Ml-Series Card; Ml-Series Sonet/Sdh Transmission Rates; Sonet Frame Fundamentals; Table 4-1 Transmission Multiples Supported By Ml-Series Cards - Cisco ONS 15454 Software Feature And Configuration Manual

POS on the ML-Series card

POS on the ML-Series card

Packet over SONET/SDH (POS) is a high-speed method of transporting IP traffic between two points.
This technology combines the Point-to-Point Protocol (PPP) with SONET and Synchronous Digital
Hierarchy (SDH) interfaces. SONET is an octet-synchronous multiplex scheme defined by the American
National Standards Institute (ANSI) standard (T1.105.1988) for optical digital transmission, and SDH
is the European Telecommunications Standards Institute (ETSI) equivalent.

ML-Series SONET/SDH transmission rates

SONET transmission rates are integral multiples of 51.840 Mbps. The transmission multiples in
Table 4-1
Table 4-1
Topology
Circuits terminated by two ML-Series cards STS-1, STS-3c, STS-6c, STS-9c, STS-12c, and STS-24c
Circuits terminated by G-Series card and
ML-Series card
Circuits terminated by ML-Series card and
External POS device

SONET Frame Fundamentals

SONET is a Layer 1 protocol that uses a layered architecture.
three layers: section, line, and path. The section overhead (SOH) and line overhead (LOH) form the
transport overhead (TOH), while the path overhead (POH) and actual payload (referred to as payload
capacity) form the synchronous payload envelope (SPE). Each layer adds a number of overhead bytes to
the SONET frame.
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
4-8
are supported.
Transmission Multiples Supported by ML-Series Cards
Supported Sizes
(SONET) or VC4, VC4-2c, VC4-3c, VC4-4c, and
VC4-8c (SDH)
STS-1, STS-3c, STS-6c, STS-9c, STS-12c (SONET) or
VC4, VC4-2c, VC4-3c, VC4-4c, and VC4-8c (SDH)
STS-3c and STS-12c (SONET) or VC4-2c and VC4-3c
(SDH)
Figure 4-1 on page 4-9
Chapter 4 Configuring Interfaces
shows SONET's
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