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  4. Network Router
  5. uBR924
  6. Installation and startup

Cisco ubr924 Installation And Startup page 10

Cable access router
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Install the Router and Connect Cables (continued)
Connect the Backup POTS
8
Connection
Step 1
Locate the needed minimum 26 AWG
RJ-11 to RJ-11 cable to connect the router
to a backup POTS line.
Note: If the Cisco uBR924 cable access router has
a backup connection to the PSTN and the router
loses power while VoIP calls are in progress, the
subscriber can re-establish one of the two VoIP line
connections—dialing out over the PSTN.
Caution
enables only one of the two voice lines
connected to the router to function during a
power outage. Calls in progress prior to the
power outage will be disconnected.
Ether net 0
1
2
3
4
Phon e
Cable TV In
X
X
X
X
v1+v 2 v2
To RJ-11 phone wall jack
The backup POTS connection
Cisc o uBR 924
Line
5V
3A
8V
0.65A
Cons ole
40V
7mA
Rese t
Powe r
If power is re-established while a cutover
call is in progress, the connection will
remain in place until the call is terminated.
When the cutover call is terminated, the
router automatically reboots.
Warning
and maintained by personnel only as defined
by AS/NZS 3260 Clause 1.2.14.3 Service
Personnel.
Step 2
Connect one end of the cable to the
backup POTS line port (labeled Line) at
the rear of the router. Press the cable
firmly into the receptacle.
Step 3
Connect the other end of the cable to the
telephone wall jack.
This equipment is to be installed

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