Specifications

Installing the Hardware
38 Enterasys Xpedition 2000 Getting Started Guide
Enterasys offers the following four cables, used to connect the XP to standard CSU/DSU
modules:
Note: Because the LFH-60 high density connectors on Dual Serial and Quad
Serial – C/CE expansion modules contain two serial WAN ports per interface, all
four cable types defined above feed two CSU/DSU ports.
Table 20 maps the pin assignments for Enterasys’ LFH-60 high density connectors for the
Dual Serial and Quad Serial – C/CE expansion modules.
Table 19. Enterasys dual serial port to CSU/DSU connector cables
Enterasys Part Number CSU/DSU Connector Type Standard
SYS-SV35-DTE Two (2) V.35 34-pin connectors
a
V. 35
SYS-S530-DTE Two (2) DB-25 25-pin connectors EIA-530
SYS-S449-DTE Two (2) DB-37 37-pin connectors RS-449
SYS-SX21-DTE Two (2) DB-15 15-pin connectors X.21
a. The two remote ends of each type of connector cable is labeled “Port A” and “Port B”. “Port A”
corresponds to Port 1 on a Dual Serial WAN expansion module and Port 1 or 3 on a
Quad Serial – C/CE, depending upon which WAN expansion module port you are using. Similarly,
“Port B” corresponds to Port 2 on a Dual Serial WAN expansion module and Port 2 or 4 on a Quad
Serial – C/CE.
Table 20. LFH-60 high density connector pin assignments
Pin Signal Pin Signal Pin Signal Pin Signal
1 P1_GND 16 P2_TXC_A 31 P1_GND 46 P2_TXD_A
2 P1_MODE[2] 17 P2_TXC_B 32 P1_MODE[0] 47 P2_TXD_B
3 P1_CTS_B 18 P2_DCD_A 33 P1_DCD_B 48 P2_RTS_A
4 P1_CTS_A 19 P2_DCD_B 34 P1_DCD_A 49 P2_RTS_B
5 P1_RTS_B 20 P2_MODE[1] 35 P0_RXD_B 50 P2_DSR_A
6 P1_RTS_A 21 P2_GND 36 P0_RXD_A 51 P2_DSR_B
7 P1_SCTE_B 22 P2_GND 37 Reserved 52 P2_LL_A
8 P1_SCTE_A 23 P1_TXD_A 38 P2_GND 53 P2_SHIELD
9 P1_GND 24P1_TXD_B 39P2_MODE[0] 54Reserved
10 P2_GND 25 P1_TXC_A 40 P2_CTS_B 55 P1_RXC_A
11 P2_MODE[2] 26 P1_TXC_B 41 P2_CTS_A 56 P1_RXC_B