Specifications

Cisco IGX 8400 Series Family
Cisco Site Preparation Guide
3-44
Frame Relay service modules All Frame Relay service modules conform to the following:
CCITT 1.122 (ANSI T1/S1)
T1.606—Services description of Frame Relay bear service
T1.606 addendum—Congestion management
T1.617 (Annex D)—Signaling specification for Frame Relay
T1.618—Core aspects of Frame Relay
Includes fully standard handling of DE, FECN, and BECN bits
Frame Relay module (FRM)
Up to four channels, totaling 2.048 Mbps
Supports V.35, EIA-TIA/422, EIA/TIA-449, X.21/V.36, and T1/E1
(channelized and nonchannelized) interfaces.
Frame Relay module (FRM-31)
Up to 31 logical ports
Frame Relay module (FRM-2)
T1/E1 (channelized and nonchannelized) interfaces
X.21 1/f for port concentrator shelf
Universal Frame Relay module (UFM-C)
8 ports T1/E1 (channelized or unchannelized)
Universal Frame Relay module (UMF-U)
Supports 12 V.35/X.21 ports per card
Supports four HSSI ports per card
ATM Service Modules ATM line module (ALM/A)
Supports unchannelized T3/E3 with 45 Mbps throughput UNI 3.0 portside
interface CBR, VBR, and C.S support
64,000 cells of buffering
Supports up to 1500 connections per card
Network trunking modules Network trunking front module (NTM)
Trunk sppeds from 128 Kbps to 2.048 Mbps
Supports T1/E1, Japanese J1 trunk interfaces
Broadband ATM trunk module (BTM)
ITU 53-byte cell standard
Supports T3/E3 and HSSI interfaces
Multipoint logical trunking over ATM service
ATM Line module (ALM/B)
Supports unchannelized T3/E3 with 45 Mbps throughput
Full CCITT ATM compliance
Frame trunk module (FTM)
FastDLC, FrameClass, Frame Relay service compatible protocol
Frame trunk speeds from 9.6 Kbps to 512 Kbps
Supports V.35, T1, E1 and X.21 interfaces
Table 3-28 GX 8400 Series Physical Specifications (Continued)
Characteristic Description