Appendix C. Cables
C–12
Promptus E1/ISDN
A Promptus E1/ISDN cable connects a Promptus
E1/ISDN module to an E1 or an ISDN PRI network.
Each E1/ISDN module
1
provides two RJ-45 modular
jacks:
❐
For a single-interface module, you must use the jack
next to the LEDs.
❐
For a dual-interface module, you can use both jacks.
Each E1/ISDN module ships with an E1/ISDN cable with
an RJ-45 modular plug.
Use the following specifications when building your own
E1/ISDN cable:
❐
Maximum length 655 feet (199.5 meters)
❐
Shielded
❐
Stranded
❐
24-AWG cable
❐
2-pair, twisted-pair inside telephone wire
1.
An E1/ISDN module uses RJ-45 signaling.