Carrier Access Access Navigator user manual GR-303 Operation, Crossconnects

Models: Access Navigator

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Access Navigator / GR-303 + Data Host

Specifications

Specifications

GR-303 Operation

￿￿Up to 32 T1s per system

￿￿Primary and redundant protection for EOC and TMC

￿￿GR-303 to TR-08 translation for CA’s Access Bank I/TR-08

￿￿GR-303 Direct Inward Dial (DID) support for Lucent 5ESS switches ￿￿GR-303 line concentration of 4:1 TDM ISDN BRI services ￿￿Alarm and maintenance support for DS1 terminations ￿￿Compatible with Lucent, Nortel, and Siemens switches ￿￿Configurable concentration ratios

￿￿Programmable call reference values (CRVs) ￿￿Redundancy, 1:1 controller & power conversion

Crossconnects

￿￿DCS 1/0 interface supports crossconnects at DS0 level

￿￿Crossconnects up to 24 contiguous DS0s between T1s with one command

DS1 Interface

￿￿Four T1s per line card, hot swappable ￿￿Line rate: 1.544 Mb/s ± 32ppm ￿￿Line code: B8ZS or AMI ￿￿Framing: D4 (SF) or ESF

￿￿DS1 receive sensitivity: –28dB to +1.5dB

￿￿Line build-outs:

DSX-1 (0 to 660 ft. in 5 steps)

CSU (0 dB, –7.5 dB, –15 dB, –22.5dB)

￿￿ANSI T1.403, Section 6 & 7 (jitter, pulse mask transmission, receive sensitivity, framing formats)

￿￿Built-in CSU with loopback and BERT for testing the T1s

System Clocking

￿￿Primary and secondary sources from: DS1s, external clock source (such as BITS) or internal clock (minimum Stratum 4)

￿￿Automatic clock switching and holdover

Access Navigator - Release 1.8

August 2003

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Page 59
Image 59
Carrier Access Access Navigator user manual GR-303 Operation, Crossconnects