Well that rabbit trail paid off.... thanks David.
It does appear as if the GXP-2000 only supports one channel of G729. You can have many different lines on hold with G729, but the conference feature requires two channels be active and only one of them can be G729.
This is true even if you force the codecs on the phone to G729. It will use ulaw instead. Here is the output of the channels showing the last channel is coming in as ulaw on a phone that has G729 throughout.
config*CLI> core show channels
SIP/5004-082b0918 (None) Up Bridged Call(SIP/5003-0828b410
SIP/5003-0828b410 [EMAIL PROTECTED]:6 Up Dial(SIP/5004||)
SIP/5000-082ba530 (None) Up Bridged Call(SIP/5003-082853b8
SIP/5003-082853b8 [EMAIL PROTECTED]:6 Up Dial(SIP/5000|20)
config*CLI> core show channel SIP/5004-082b0918
-- General --
Name: SIP/5004-082b0918
Type: SIP
UniqueID: 1181665010.38
Caller ID: *5004
Caller ID Name: (N/A)
DNID Digits: (N/A)
State: Up (6)
Rings: 0
NativeFormats: 0x100 (g729)
WriteFormat: 0x100 (g729)
ReadFormat: 0x100 (g729)
WriteTranscode: No
ReadTranscode: No
config*CLI> core show channel SIP/5003-0828b410
-- General --
Name: SIP/5003-0828b410
Type: SIP
UniqueID: 1181665010.36
Caller ID: 5003
Caller ID Name: Anthony T Plack
DNID Digits: *5004
State: Up (6)
Rings: 0
NativeFormats: 0x100 (g729)
WriteFormat: 0x100 (g729)
ReadFormat: 0x100 (g729)
WriteTranscode: No
ReadTranscode: No
config*CLI> core show channel SIP/5000-082ba530
-- General --
Name: SIP/5000-082ba530
Type: SIP
UniqueID: 1181664181.35
Caller ID: 5000
Caller ID Name: (N/A)
DNID Digits: (N/A)
State: Up (6)
Rings: 0
NativeFormats: 0x100 (g729)
WriteFormat: 0x40 (slin)
ReadFormat: 0x40 (slin)
WriteTranscode: Yes
ReadTranscode: Yes
config*CLI> core show channel SIP/5003-082853b8
-- General --
Name: SIP/5003-082853b8
Type: SIP
UniqueID: 1181664181.34
Caller ID: 5003
Caller ID Name: Anthony T Plack
DNID Digits: 5000
State: Up (6)
Rings: 0
NativeFormats: 0x4 (ulaw)
WriteFormat: 0x40 (slin)
ReadFormat: 0x40 (slin)
WriteTranscode: Yes
ReadTranscode: Yes
> On 6/12/07, Tony Plack wrote:> I have GXP-2000
> phones running against Asterisk 1.4. All phones are running G729
> and this is witnessed by the fact that the phone shows the G729
> codec.
>
>> I dial the first phone, place it on hold, dial the second phone,
>> press CONF and the other line. The first connection goes away
>> and the second remains connected.
>>
>>
> I have seen phones that only allow ONE g.729 stream to be
> operating at a time. You may want to check the documentation and
> see if that's what the licensing on the GXP-2000 allows.
>
> Hope that helps nudge you in the right direction, David
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