CHAPTER
Service Interface (Line) Cards 5-1
5
Service Interface (Line) Cards
This chapter contains a description of the BPX switch service interface (line) cards, including the
ATM Service Interface (ASI) and associated backcards.The BXM cards are briefly described in this
chapter and covered in full in a later chapter.
This chapter contains the following:
• BPX Switch Service Interface Group Summary
• BXM Cards, Port (UNI) Mode
• ASI-1, ATM Service Interface Card
• LM-2T3 Module
• LM-2E3 Module
• ASI-155, ATM Service Interface Card
• ASI-155 Line Module, LM-2OC3-SMF
• ASI-155 Line Module, LM-2OC3-SMFLR
• ASI-155 Line Module, 2OC3-MMF
• Y-Cabling of ASI Backcard, SMF-2-BC
• BXM Cards, Access (UNI) Mode
• Optional Peripherals
BPX Switch Service Interface Group Summary
The BPX switch service interface group of cards provides an ATM interface between the BPX switch
and CPE (see Figure 5-1). The ASI series of cards (DS3, E3, and OC3) are described in this chapter.
The BXM card service operation is briefly described in this chapter with additional information
provided in a later chapter. The BXM cards may be configured for either trunk or port (service access
UNI) mode. In service (port UNI) mode they provide ATM service interfaces to CPE.
BXM Cards, Port (UNI) Mode Summary
The BXM card sets supports OC-12/STM-4 or OC-3/STM-1 interfaces, and provide the capacity to
meet the needs of emerging bandwidth driven applications. The BXM provides high speed ATM
connectivity, flexibility, and scalability. The card sets are comprised of a front card that provides the
processing, management, and switching of ATM traffic and of a back card that provides the physical
interface for the card set.
