The SAAL layer is used for reliable
signaling between ATM endpoints. The ATM Signaling AAL (SAAL) stack from
Aricent provides efficient and reliable solutions to signaling components.
With this standards-based, off-the-shelf stack, network equipment
manufacturers, component makers, and application developers can reduce their
time-to-market.
Aricent’s ATM SAAL stack has been integrated with
protocols such as Broadband V5, ATM SVC, and others. It supports many
different applications, such as:
- 3G and GPRS equipment – used in Node B, RNC, SGSN
and MSC for providing Iub, Iur, Iu-PS and Iu-CS interfaces
- ATM switches
- Interworking network devices
- Test and measurement devices
The majority of Aricent’s products are delivered with
tailored combinations of our Lifecycle Services, including Global Innovation
and Design, Product Development, Testing and Certification, Network
Engineering, Maintenance and Support, and Business Operations and Systems
Integration. Aricent’s engineers and consultants have successfully completed
thousands of services engagements globally using flexible delivery models
ranging from on-site to off-shore. Aricent’s services offer deep
communications domain expertise, cost and time efficiencies, quick ramp up
and contemporary commercial engagement models including end-to-end
commitments.
Aricent offers both SAAL-UNI and SAAL-NNI:
- SSCF at UNI conforming to ITU-T Q.2130
- SSCF at NNI conforming to ITU-T Q.2140
- Provides support for assured data transfer –
unacknowledged and management data transfer between peer management
entities
- Extensive statistics collection – internal events
and error statistics
- Supports ATM Forum UNI 3.0, 3.1 and 4.0
- Pluggable component, can be used with a third
party SSCOP implementation
- Pluggable component, can be used with a third
party SSCOP implementation
- Each layer offers full compliance to the following
ITU-T standards:
- ITU-T Q.2100 B-ISDN ATM Signaling Adaptation
Layer (SAAL) Overview Description
- ITU-T Q.2110 B-ISDN ATM Adaptation Layer
–Service Specific Connection Oriented Protocol (SSCOP)
- ITU-T Q.2130 B-ISDN Signaling ATM Adaptation
Layer – Service Specific Co-ordination Function for support of
Signaling at the User Network Interface (SSFC UNI)
- ITU-T Q.2140 B-ISDN Signaling ATM Adaptation
Layer – Service Specific Coordination Function for support of
Signaling at the Network Node Interface (SSFC NNI)
- Portable across operating systems and hardware
platforms
- Extensive support to provide redundancy
- Well-defined and documented interfaces to the
stack (APIs)
- In-built hooks support fault tolerant
architectures
- General architecture
- Extensive statistics collection – internal
events and error statistics
- Error/alarm reporting
- Multi-level tracing support – detailed, medium
and brief traces
Aricent's ATM SAAL stack has been successfully tested
with HP-BSTS at customer sites
- Sun-Solaris
- VxWorks
- Other ports such as Lynx, PSOS, Nucleus, Windows
NT, etc., can be provided within 3-4 weeks
- Modularity
- Layered architecture
- Stack data structures are hidden from the
outside world
- Compile time exclusion of functionality
- Multiple configuration options -
multi-tasking/single-thread and message-based/functional interface
- Porting effort restricted to modules involving
operating system interfaces; error handling/reporting, external
interfaces
- Customization of task architecture, custom event
handlers and communication between modules
- Debugging support
- Source code for SAAL UNI/NNI
- User documentation
- Application programmers interface
- Warranty and optional annual support plans
- Training and on-site consultancy
- Turnkey integration and porting services
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