HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual page 239

If you have an EIA 530 cable that you purchased from another vendor, the
ProCurve Secure Router supports it. You can also use Figure 5-6, which shows
the pinouts for EIA 530, to create this type of connector.
1
14
DB-25 connector pinout
Pin Signal/Circuit Name
1 Shield
2 TD_A, Transmitted Data A
3 RD_A, Received Data A
4 RTS_A, Request to Send A
5 CTS_A, Clear to Send A
6 DCR_A, DCE Ready A
7 Signal Ground
8 RLSD_A, Received Line Signal Detector A
9 RSECTC_B, Receiver Signal Element Timing (DCE Source) B
10 RLSD_B, Received Line Signal Detector B
11 TSETT_B, Transmitter Signal Element Timing (DTE Source) B
12 TSETC_B, Transmitter Signal Element Timing (DCE Source) B
13 CTS_B, Clear to Send B
14 TD_B, Transmitted Data B
15 TSETC_A, Transmitter Signal Element Timing (DCE Source) A
16 RD_B, Received Data B
17 RSETC, Receiver Signal Element Timing (DCE Source) A
18 LL, Local Loopback
19 RTS_B, Request to Send B
20 DTR_A, DTE Ready A
21 RL, Remote Loopback
22 DCR_B, DCE Ready B
23 DTR_B, DTE Ready B
24 TSETT_A, Transmitter Signal Element Timing (DTE Source) A
25 TM, Test Mode
Figure 5-6. Connector for an EIA 530 Cable
Whichever cable you use, the serial module supports up to 10 Mbps.
Configuring Serial Interfaces for E1- and T1-Carrier Lines
Serial Interface: Configuring the Physical Layer
DB-25
13
25
5-11