2Chapter 1
Po w er Requirements
The TelephonyModem requires 115–240V,50/60 Hz AC power.The socket-
outlet must be properly earthed. Makesure that the power circuits have suffi-
cient capacity to power the TelephonyModem before connecting power.
TelephonyRequirements
Each telephone line supports copper wire loop lengths of up to 128Ω,equiv-
alent to 1000 feet (457 m) of 26 AWG (American Wire Gauge) copper wire
loop. The loop length includes the cable between the TelephonyModem and
punch-down block, subscriber premises wiring, and extension cables used
with subscriber CPE.
The TelephonyModem uses one of the following telephonyconnections:
•cable with RJ-21X connectors to the punch-down block
•RJ-14 or RJ-11 connectors
•IDC rocker connectors
Network Requirements
If the TelephonyModem is to provide data service for subscribers, a
100BaseT Ethernet connection (usually a hub or switch) must be available.
The HFC network must be DOCSIS 2.0 compatible.
Forbest performance, use high-quality RG-6 type coax cable and minimize
or eliminate splitters between the cable jack and the TelephonyModem.
Touchstone® TelephonyRelease 6 Standard 1.0 December 2008
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