Hello List
I'm trying to make my openbsc installation work in half rate mode but I'm facing some errors. I'm wondering if someone could provide me with more info or help me to configure openbsc. I have changed in openbsc.cfg the timeslots 2 to 7 from phys_chan_config TCH/F into phys_chan_config TCH/H also I have tested changing neci bit and change audio codecs but no luck. Am I missed something? Is there any way to run osmo-nitb with gsmtap? openbsc.cfg is attached
Thanks in advance.
On 02/22/2013 01:18 AM, Sylvain Munaut wrote:
I'm trying to make my openbsc installation work in half rate mode but
I don't think nanoBTS support HR codec at all ...
Cheers,
Sylvain
Thanks for the immediate response. Is your answer based on hands-on experience, feedback from other developers/users or something else? In the nanoGSM® EDGE 900 datasheet is not mentioned the TCH/H support, but the nanoGSM® EDGE 1800 model seems to support it. Do you believe that the 1800 model could work?
Also I noticed in the OpenBSC wiki that TCH/H is not implemented in osmo-nitb but only in osmo-bsc, is this information correct?
Thanks for your time. ./Vervelak
./Vervelak wrote:
Also I noticed in the OpenBSC wiki that TCH/H is not implemented in osmo-nitb but only in osmo-bsc, is this information correct?
there are several reasons why TCH/H is not currently working with osmo-nitb. i plan to make it work soon, but it still requires BTS to support it.
Is your answer based on hands-on experience, feedback from other developers/users or something else?
hands-on experience.
In the nanoGSM® EDGE 900 datasheet is not mentioned the TCH/H support, but the nanoGSM® EDGE 1800 model seems to support it.
TCH/H != HR
The EDGE models do support AMR-HR. But that's different from HR. And not supported by osmo-nitb currently.
Cheers,
Sylvain
On 2/22/13 5:59 PM, Sylvain Munaut wrote:
Is your answer based on hands-on experience, feedback from other developers/users or something else?
hands-on experience.
In the nanoGSM® EDGE 900 datasheet is not mentioned the TCH/H support, but the nanoGSM® EDGE 1800 model seems to support it.
TCH/H != HR
The EDGE models do support AMR-HR. But that's different from HR. And not supported by osmo-nitb currently.
Cheers,
Sylvain
So, the nanoBTS support AMR speech codec but don't support HR speech codec and in osmo-bsc TCH/H is supported unlike osmo-nitb?
and if i write code in osmo-nitb that support TCH/H i will have 14 simulate calls in my setup? are there any guidelines for new openBSC developers or can someone provide me with some highlights about porting TCH/H from osmo-bsc to osmo-nitb?
Thanks again for your time.
N.v wrote:
are there any guidelines for new openBSC developers or can someone provide me with some highlights about porting TCH/H from osmo-bsc to osmo-nitb?
hi,
there are several things that need to be done to support TCH/H as well as AMR codec at osmo-nitb. as i said before, i am working on it. regards,
andreas
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./Vervelak -
jolly -
N.v
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Sylvain Munaut