Version 6.6 453 October 2014
Installation & Operation Manual 37. Using Auxiliary Files
37.6 External Coders Files
The External Coders file defines which coders are to be supported by the Media
Gateway board. It is limited to the supported coders according to the loaded DSP
template. Other coders can not be added.
External Coders files must be uploaded to the Media Gateway boards in binary format.
You can edit the "source" coders file in any text editor (as described in 'Modifying the
"Source" External Coders File' on page 453) and convert it to the binary format using
the DConvert utility (as described in 'Converting External Coders File to Binary
Format' on page 454).
To associate an External Coders file with a Media Gateway board, see 'Auxiliary Files
Repository' on page 422.
37.6.1 Modifying the "Source" External Coders File
This section describes syntax of the text-based "source" External Coders file. This file
must be converted to the binary format via the DConvert utility prior to uploading it to
the Media Gateway.
The following is an example of a "source" External Coders file.
[Internal name] [Coder name] [Txpayload] [RxPayload] [Ptime]
PCMA PCMA 8 8 20
PCMU PCMU 0 0 20
G726-16 G726-16 35 35 20
G726-24 G726-24 36 36 20
G726-32 G726-32 2 2 20
G726-40 G726-40 38 38 20
X-G727-16 X-G727-16 39 39 20
X-G727-24-16 X-G727-24-16 40 40 20
X-G727-24 X-G727-24 41 41 20
X-G727-32-16 X-G727-32-16 42 42 20
X-G727-32-24 X-G727-32-24 43 43 20
X-G727-32 X-G727-32 44 44 20
X-G727-40-16 X-G727-40-16 45 45 20
X-G727-40-24 X-G727-40-24 46 46 20
X-G727-40-32 X-G727-40-32 47 47 20
G723HIGH G723 4 4 30
G723LOW G723 80 80 30
G729 G729 18 18 20
G728 G728 15 15 20
GSM GSM 3 3 20
X-CCD X-CCD 56 56 20
iLBC13 iLBC 100 100 30
iLBC15 iLBC 101 101 20
BV16 BV16 102 102 20
EVRC_C EVRC 103 103 20
telephone-event telephone-event 96 96 20
RED RED 104 104 20
CN CN 13 13 20
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