Wow, since July there has been no resolution to this issue! I have this issue and am also stumped. When I attempt to retrieve GV voicemail by calling my GV number via a phone connected to my Obihai 110 phone port I get a busy signal (GV is my SP1 and GV is setup to retrieve voicemail requiring a pin for access). I tried to diagnose with PhonerLite debug (call my GV number from PhonerLite) but I'm not seeing anything obvious. Below is my debug - anyone have any suggestions? Thanks.
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08:14:09,773: T: 127.0.0.1:5060 (UDP)
INVITE sip:myGoogleVoicenumber@127.0.0.1 SIP/2.0
Via: SIP/2.0/UDP 127.0.0.1:62516;branch=z9hG4bK8026aa2fef24e2119601eb78d954abf0;rport
From: <sip:mySoftPhonenumber@127.0.0.1>;tag=2883828328
To: <sip:myGoogleVoicenumber@127.0.0.1>
Call-ID: 8026AA2F-EF24-E211-9600-EB78D954ABF0@127.0.0.1
CSeq: 2 INVITE
Contact: <sip:mySoftPhonenumber@127.0.0.1:62516>
Content-Type: application/sdp
Allow: INVITE, OPTIONS, ACK, BYE, CANCEL, INFO, NOTIFY, MESSAGE, UPDATE
Max-Forwards: 70
Supported: 100rel, replaces, from-change
User-Agent: SIPPER for PhonerLite
P-Preferred-Identity: <sip:mySoftPhonenumber@127.0.0.1>
Content-Length: 437
v=0
o=- 919299051 1 IN IP4 127.0.0.1
s=SIPPER for PhonerLite
c=IN IP4 127.0.0.1
t=0 0
m=audio 62518 RTP/AVP 107 8 0 2 3 97 110 111 9 101
a=rtpmap:107 opus/48000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:2 G726-32/8000
a=rtpmap:3 GSM/8000
a=rtpmap:97 iLBC/8000
a=rtpmap:110 speex/8000
a=rtpmap:111 speex/16000
a=rtpmap:9 G722/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ssrc:1739940382
a=sendrecv
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08:14:09,774: R: 127.0.0.1:5060 (UDP)
SIP/2.0 100 Trying
Call-ID: 8026AA2F-EF24-E211-9600-EB78D954ABF0@127.0.0.1
Cseq: 2 INVITE
Content-Length: 0
From: <sip:mySoftPhonenumber@127.0.0.1>;tag=2883828328
To: <sip:myGoogleVoicenumber@127.0.0.1>;tag=SP17921375b291c2924
Via: SIP/2.0/UDP 127.0.0.1:62516;branch=z9hG4bK8026aa2fef24e2119601eb78d954abf0;received=127.0.0.1;rport=62516
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08:14:09,777: R: 127.0.0.1:5060 (UDP)
SIP/2.0 180 Ringing
Call-ID: 8026AA2F-EF24-E211-9600-EB78D954ABF0@127.0.0.1
Cseq: 2 INVITE
Content-Length: 0
From: <sip:mySoftPhonenumber@127.0.0.1>;tag=2883828328
To: <sip:myGoogleVoicenumber@127.0.0.1>;tag=SP17921375b291c2924
Via: SIP/2.0/UDP 127.0.0.1:62516;branch=z9hG4bK8026aa2fef24e2119601eb78d954abf0;received=127.0.0.1;rport=62516
08:14:09,778: Info Indication: 0F 00 01 00 08 82 16 00 01 01 00 00 01 80 00
08:14:09,778: Info Indication: alerting
08:14:09,780: Info Response: 0C 00 01 00 08 83 16 00 01 01 00 00
08:14:09,780: Info Response
08:14:09,780: Info Indication: 11 00 01 00 08 82 17 00 01 01 00 00 1E 00 02 81 88
08:14:09,780: Info Indication: in-band information or an appropriate pattern is now available
08:14:09,780: Connect B3 Request: 0D 00 01 00 82 80 D3 0F 01 01 00 00 00
08:14:09,780: Connect B3 Request
08:14:09,780: Info Response: 0C 00 01 00 08 83 17 00 01 01 00 00
08:14:09,780: Info Response
08:14:09,780: Info Indication: 25 00 01 00 08 82 18 00 01 01 00 00 6C 00 16 00 80 34 30 37 35 37 34 38 31 39 30 40 31 32 37 2E 30 2E 30 2E 31
08:14:09,780: Info Indication: myGoogleVoicenumber@127.0.0.1
08:14:09,780: Info Response: 0C 00 01 00 08 83 18 00 01 01 00 00
08:14:09,780: Info Response
08:14:09,783: Connect B3 Confirm: 0E 00 01 00 82 81 D3 0F 01 01 01 00 00 00
08:14:09,783: Connect B3 Confirm
08:14:09,783: Connect B3 Active Indication: 0D 00 01 00 83 82 1A 00 01 01 01 00 00
08:14:09,783: Connect B3 Active Indication
08:14:09,783: Connect B3 Active Response: 0C 00 01 00 83 83 1A 00 01 01 01 00
08:14:09,784: Connect B3 Active Response
08:14:09,784: Facility Request: 19 00 01 00 80 80 D4 0F 01 01 01 00 01 00 0A 01 00 64 00 3C 00 00 00 00 00
08:14:09,784: Facility (DTMF on/off) Request
08:14:09,843: Facility Confirm: 11 00 01 00 80 81 D4 0F 01 00 00 00 00 00 01 00 00
08:14:09,843: Facility Confirm (DTMF)
-------------------------------------------
08:14:11,753: R: 127.0.0.1:5060 (UDP)
SIP/2.0 486 Busy Here
Call-ID: 8026AA2F-EF24-E211-9600-EB78D954ABF0@127.0.0.1
Cseq: 2 INVITE
Content-Length: 0
From: <sip:mySoftPhonenumber@127.0.0.1>;tag=2883828328
To: <sip:myGoogleVoicenumber@127.0.0.1>;tag=SP17921375b291c2924
Via: SIP/2.0/UDP 127.0.0.1:62516;branch=z9hG4bK8026aa2fef24e2119601eb78d954abf0;received=127.0.0.1;rport=62516
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08:14:11,753: T: 127.0.0.1:5060 (UDP)
ACK sip:myGoogleVoicenumber@127.0.0.1 SIP/2.0
Via: SIP/2.0/UDP 127.0.0.1:62516;branch=z9hG4bK8026aa2fef24e2119601eb78d954abf0;rport
From: <sip:mySoftPhonenumber@127.0.0.1>;tag=2883828328
To: <sip:myGoogleVoicenumber@127.0.0.1>;tag=SP17921375b291c2924
Call-ID: 8026AA2F-EF24-E211-9600-EB78D954ABF0@127.0.0.1
CSeq: 2 ACK
Content-Length: 0
08:14:11,754: Info Indication: 0F 00 01 00 08 82 87 00 01 01 00 00 45 80 00
08:14:11,754: Info Indication: disconnect
08:14:11,754: Info Response: 0C 00 01 00 08 83 87 00 01 01 00 00
08:14:11,754: Info Response
08:14:16,008: Disconnect B3 Indication: 0E 00 01 00 84 82 61 01 01 01 01 00 00 00
08:14:16,008: Disconnect B3 Indication
08:14:16,008: Disconnect B3 Response: 0C 00 01 00 84 83 61 01 01 01 01 00
08:14:16,008: Disconnect B3 Response
08:14:16,008: Disconnect Request: 12 00 01 00 04 80 45 11 01 01 00 00 05 00 00 00 00 00
08:14:16,008: Disconnect Request
08:14:16,015: Disconnect Indication: 0E 00 01 00 04 82 62 01 01 01 00 00 00 34
08:14:16,015: Disconnect Indication:
08:14:16,030: Disconnect Response: 0C 00 01 00 04 83 62 01 01 01 00 00
08:14:16,030: Disconnect Response