I am trying to configure the FXO port (voice-port 4) on a Cisco SRST881. Currently, there is one working remote extension here (ext 50) and all calls originate from our main office.

My goal is to get two extensions setup and configure the FXO port at Site B with an additional incoming line.

So here is the layout:

Site A Cisco UC520 w/CME
30 Mbps Fiber
15 extensions
1 secretary

-IPsec vpn-

Site B Cisco SRST881
1 Mbps Proprietary WiFi radio
2 extensions
1 secretary

dial-peer voice 10 pots
destination-pattern 9T
incoming called-number .
port 4

dial-peer voice 100 voip
desination-pattern ..
session target ipv4:
dtmf-relay h245-alphanumeric
no vad

voice-port 4
connection plar opx 50
caller-id enable

When I test the call it rings a couple times and then I get a busy signal. I have been reading 'CCNA Voice Official Exam Certification Guide' and don't have much experience with VoIP. While reading the section on hunt-groups I thought that the call might not know where to go once it reached the FXO, so I added:

voice hunt-group 1 parallel
final 89
list 50, 51
timeout 10

Now the test call just continues to ring. I am continuing to work through this but I thought someone with more experience could provide some guidance. Thanks in advance.

show voice port 4

Foreign Exchange Office 4 Slot is 0, Sub-unit is 3, Port is 0
Type of VoicePort is FXO
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is Incoming phone line
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 128 ms
Echo Cancel worst case ERL is set to 6 dB
Playout-delay Mode is set to adaptive
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 1000 ms
Playout-delay Minimum mode is set to default, value 40 ms
Playout-delay Fax is setto 300 ms
Connection Mode is plar opx
Connection Number is 50 Initial Time Out is set to 15 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 60 s
Power Denial Disconnect Time Out is set to 1000 ms
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is u-law Region Tone is set for US

Analog Info Follows:
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name None, Station number None

Caller ID Info Follows: Standard BELLCORE Caller ID is received after 1 ring(s)
Translation profile (Incoming):
Translation profile (Outgoing):

Voice card specific Info Follows:
Signal Type is loopStart
Battery-Reversal is enabled
Number Of Rings is set to 1
Supervisory Disconnect is signal
Answer Supervision is inactive
Hook Status is On Hook
Ring Detect Status is inactive
Ring Ground Status is inactive
Tip Ground Status is inactive
Dial Out Type is dtmf
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Percent Break of Pulse is 60 percent
GuardOut timer is 2000 ms
Minimum ring duration timer is 125 ms
Hookflash-in Timing is set to 600 ms
Hookflash-out Timing is set to 400 ms
Supervisory Disconnect Timing (loopStart only) is set to 350 ms
OPX Ring Wait Timing is set to 6000 ms

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