86:. Additional design efforts came from Andy Annudurai, Ravi Sajwan, and Imran Chaudhri (who also came up with the name). Chee Hu did most of the work on getting the "C" version to work at speed and to be manufacturable. Denis Smetana did most of the work on the "D" version and on the later 32 DS1 version. Jim Jacobson of OnStream Networks was the Beta Customer.
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The AAL1gator could flexibly map individual DS0s or groups of DS0s into 256 ATM VCs. It also had a high speed mode which mapped a single DS-3 into ATM. Additionally, it had a high performance implementation of the SRTS clock recovery algorithm. The original AAL1gator also was delivered along with
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An anecdote from the AAL1gator's development is that Brian Holden and Ed Lennox made a quick, off-handed decision in a hallway to add the "PMC Mode" to the "B" version of the device in mid-1996 to provide a glueless interface to PMC-Sierra's TQUAD and EQUAD T1 and E1 framers. Little did they know
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Two U.S. patents were issued on the AAL1gator's calendar-based transmit scheduler, one on the original product and an even better one on the "D" version enhancements designed by Denis
Smetana. The scheduler implemented several intricate methods of minimizing the jitter caused by the scheduling of
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The AAL1gator has been used in several applications that were completely different than the application it was designed for. The designers knew they had a hit product when reports of these uses came in. One use was to provide fractional T1 service over microwave radio. Another use was to move
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The IgT acquisition happened after the development was showing signs of success. The PMC-Sierra acquisition happened after IgT's AAL1gator began to drive the sales of T1/E1 framers from PMC-Sierra. The
Onstream and Sentient acquisitions happened after successful
28:. It was developed between 1994 and 1998 and became a run-away success. It also played a role in the acquisition of four companies. The name was based on the fact that the AAL1gator implements the
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the 256 channels. The AAL1gator also could have gotten another patent on its method of queuing the SRTS samples, but the designers were too busy to get the application in.
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the code for an external digital frequency synthesizer. A later version incorporated that synthesizer.
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The AAL1gator played a significant role in the following four technology acquisitions:
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CEO, Brian Holden and a consultant, Ed Lennox. Brian Holden was also involved in the
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63:/E1 lines worth of CES and had 256 channels. It flexibly converted the
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developed a 32 line version of the AAL1gator known as the AAL1gator32.
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Snapshot of the AAL1gator and AAL1gator II on the internet archive
51:(IgT). It was the first semiconductor solution to implement the
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then that this off-handed decision would be a key enabler of
163:(CES) product developments based on the AAL1gator.
171:'s acquisition of the company two years later.
74:The AAL1gator was principally designed by the
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210:Original Patent on the AAL1gator
82:standardization effort for the
43:The AAL1gator was developed by
232:The AAL1gator-32 at PMC-Sierra
221:Second patent on the scheduler
112:The AAL1gator and acquisitions
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199:The AAL1gator-8 at PMC-Sierra
131:Integrated Telecom Technology
125:Integrated Telecom Technology
49:Integrated Telecom Technology
39:Development of the AAL1gator
108:DS1's around within a box.
47:, Inc. under contract from
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99:Functions of the AAL1gator
69:Asynchronous Transfer Mode
161:Circuit Emulation Service
84:Circuit Emulation Service
53:Circuit Emulation Service
26:Circuit Emulation Service
90:Patents on the AAL1gator
262:Semiconductor devices
140:OnStream Networks by
59:. It implemented 8
24:that implements the
22:semiconductor device
267:Networking hardware
55:standard from the
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121:Network Synthesis
76:Network Synthesis
45:Network Synthesis
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256:Categories
186:References
180:PMC-Sierra
169:PMC-Sierra
135:PMC-Sierra
35:standard.
80:ATM Forum
57:ATM Forum
18:AAL1gator
154:in 1998
144:in 1996
71:cells.
33:AAL-1
20:is a
142:3Com
16:The
150:by
133:by
123:by
65:PDH
61:DS1
30:ATM
258::
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