Zhone Technologies Network Device manual

Zhone Technologies, Inc. IMACS Product Book, Version 4

There are four highways dedicated to the WAN slot, which are used to carry TDM data and signaling. Each WAN slot is connected to the Interface card through the back plane.

The IMACS supports six models of WAN cards:

1.800060 Single T1/E1 WAN card

2.801060 Dual T1/E1 WAN Card

3.801460 Dual T1/E1 WAN Card with Relays

4.801160 Dual E1 HDSL WAN Card

5.801560 Dual T1 WAN card with ESF loop back

6.802060 PairGain HDSL T1 WAN Card

The 800060 Single T1/E1 Link Card is the basic WAN Card. It has a single port for DSX/CEPT or CSU modules.

The 801060 Dual T1/E1 WAN card has two ports for either DSX/CEPT or CSU operation or a combination of the two. Both ports of this card must be populated with either the DSX/CEPT or CSU module.

The 801460 Dual T1/E1 Link Card with Relays can be used in systems with Cross Connect CPUs to act as a redundant card (1:N redundancy) for up to three standard WAN cards. Both ports of this card must be populated with either the DSX/CEPT or CSU module and must be an exact match to any WAN Cards with which it is redundant.

The 801560 WAN card with ESF Loop back is able to detect ESF data link codewords for line and payload activate and deactivate commands and the universal loop back deactivate command. A minimum reception of 10 continuous command patterns by each channel is required to trigger the loop back detection process, and the performing of the command. Since all 8 channels (4 WAN cards) are processed by one processor on the CPU card, simultaneous detection on more than one channel requires more than 10 repetitions.

The 802060 Pair Gain HDSL WAN is a dual WAN card designed to support the North American (T1) market using the PairGain HDSL OEM module (HOM). This also supports 4:1 redundancy as well as user configurable HRU functionality relative to HDSL timing. The IMACS can support up to four (4) 802060 WAN cards simultaneously and can be configured, monitored and tested through the IMACS craft interface and/or through the SNMP MIB interface. This design supports two PairGain HDSL modules per card for either IMACS to IMACS configurations as well as IMACS to PairGain NTU configurations. Each module may be configured as primary or subordinate. There must be one primary and one subordinate in the circuit. The unit designated as the primary can be accessed to change system parameters and view HDSL system performance history and current status. The subordinate provides HDSL system performance history and current status. The subordinate unit receives configuration parameters from the master unit at the other end of the loop. These configuration parameters include: Timeout for loop back, DS1 line code option (e.g. B8ZS/AMI), DS1 framing format (e.g. SF/ESF). The 802060 HDSL WAN module is supported by IMACS HOST 5.1 (or greater).

For connection to T1/E1 facilities, a DSX/CEPT or CSU Plug-in module is required per WAN port. The available modules are:

•811 T1-DSX/E1-CEPT Plug-in Module (transmission range is 655 ft.)

•812 T1-CSU Plug-in Module (transmission range is 3000 to 6000 ft)

•82030 2*1168Kbps E1 HDSL Module (compliant with ETSI ETR-152)

•82100 Dual T1 HDSL Module

These plug-in modules are mounted on the WAN cards for operation. The 811 T1-DSX/CEPT plug-in module supports either DSX or CEPT modes. Jumper / shorting pin settings on the module specify DSX or CEPT operation. The 812 CSU plug-in module is required for T1 Channel Service Unit (CSU) operation. It can be operated in D4, ESF, SLC96 or SLCD4 mode.

The 801160 Dual E1-HDSL WAN Card has two ports that are equipped with E1-HDSL modules from ADTRAN. The HDSL modules provide 2.048 Mbps E1 transmission over 2 copper pairs. It provides transport of data at an E1 rate over copper cable without mid-span repeaters or conditioning. For connection to copper loops, one HDSL module is required per WAN port.

March 2001 Page 29