OpenBSC + * + LCR -> Problems with LCR (--with-gsm-bs)

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Nik Pakar nikpakar at gmail.com
Tue Jun 26 05:52:44 UTC 2012


Hi Andreas,

Do we still have to check out from jolly-rtp branch or the rtp-bridge now
work with main openbsc repo ?

Rgds
Nik

On Sun, Jun 24, 2012 at 12:13 PM, Andreas Eversberg <andreas at eversberg.eu>wrote:

> Ellen Apolinar wrote:
>
>>
>> OpenBSC seems to work without errors but to connect it with asterisk I
>> need mISDN, mISDNuser and LCR.
>>
>>  hi,
>
> if you like to use lcr with gsm (bs or ms), then you cannot use asterisk
> channel driver. it only works with isdn. but you can use sip. in order to
> do that you may:
>
> - disable mISDN  (--without-misdn)
> - enable sip (--with-sip), you also need to have sipsofia installed
> - add a sip interface (see default/interface.conf). then everything is
> possible without mISDN, but you cannot use isdn phones/lines in this setup.
>
> example to just connect GSM and SIP interface without routing:
>
>  [GSM]
> gsm-bs
> tones yes
> earlyb no
> #rtp-bridge
> bridge SIP
>
>
> [SIP]
> sip <local ip>[:local sip port] <asterisk sip ip>[:asterisk sip port]
> tones no
> earlyb yes
> #rtp-bridge
> bridge GSM
>
> if asterisk and lcr run on the same machine, you need to change the sip
> port on asterisk or lcr side.
>
> if you like to use GSM codec on asterisk side, you may enable rtp-bridge.
> then the asterisk directly negotiates the codec with the phone.
> in this case GSM codec must be supported by asterisk. tested codecs are
> FR(standard) and EFR.
>
> regards,
>
> andreas
>
>
>
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