vism Codec Cnf Table

1.3.6.1.4.1.351.110.5.5.18.1

This table contains configuration information about different codecs and their packetization periods. ::= { vismCodecCnfGrp 1 } SYNTAX VismCodecCnfEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION An entry in the vismCodecCnfTable contains packetization period information for a specific codec. These entries are created by the agent when the card comes up with appropriate default values and the user can modify the packetization period for a particular codec any point in time. INDEX { vismCodecCnfIndex } ::= { vismCodecCnfTable 1 } VismCodecCnfEntry ::= SEQUENCE { vismCodecCnfIndex INTEGER, vismCodecName SnmpAdminString, vismCodecPktPeriod INTEGER, vismCodecPreference Integer32, vismCodecString SnmpAdminString, vismCodecIanaType Integer32, vismAltCodecString1 SnmpAdminString, vismAltCodecString2 SnmpAdminString, vismAltCodecString3 SnmpAdminString } SYNTAX INTEGER { g711u (1), g711a (2), g726r32000 (3), g729a (4), g729ab (5), clearChannel (6), g726r16000 (7), g726r24000 (8), g726r40000 (9), g723h (11), g723ah (12), g723l (13), g723al (14), lossless (15) } MAX-ACCESS read-only STATUS current DESCRIPTION This object is an index to this table. 1 represents G.711u 2 represents G.711a 3 represents G.726 at rate 32 kbps 4 represents G.729a 5 represents G.729ab 6 represents clear channel 7 represents G.726 at rate 16 kbps 8 represents G.726 at rate 24 kbps 9 represents G.726 at rate 40 kbps 10 RESERVED 11 represents G.723.1-H at rate 6.4kbps 12 represents G.723.1a-H at rate 6.4kbps with SID 13 represents G.723.1-L at rate 5.3kbps 14 represents G.723.1a-L at rate 5.3kbps with SID 15 represents Lossless ::= { vismCodecCnfEntry 1 } SYNTAX SnmpAdminString (SIZE (1..64)) MAX-ACCESS read-only STATUS current DESCRIPTION This object holds the name of a codec. For example, index 1 will have G.711u as the codec name index 2 will have G.711a as the codec name and so on. ::= { vismCodecCnfEntry 2 } SYNTAX INTEGER { ten (10), twenty (20), thirty (30), fourty (40), sixty (60) } UNITS "milliseconds This object gives the packetization period for a particular codec. for G.711u allowed values are 10 & 20 for G.711a allowed values are 10 & 20 for G.726 at 32 kbps allowed values are 10, 20, 30 & 40 for G.729a allowed values are 10, 20, 30 & 40 for G.729ab allowed values are 10, 20, 30 & 40 for clear channel allowed values are 10 and 20 for G.726 at 16 kbps allowed values are 10, 20, 30 & 40 for G.726 at 14 kbps allowed values are 10, 20, 30 & 40 for G.726 at 40 kbps allowed values are 10, 20, 30 & 40 for G.723 allowed values are 30 & 60 for Lossless allowed values are 10 and 20 Default value for G.723 is 30, for other codecs it is 10. ::= { vismCodecCnfEntry 3 } SYNTAX Integer32 (0..65535) MAX-ACCESS read-write STATUS current DESCRIPTION This object contains the user configured preference for each codec. Lower the number, higher the preference of the codec. If the call agent does not specify the preferred codec list in CRCX(CreateConnection) request then the codec used will be the one of highest preference, as configured in this object. The default preference based on the codec type is G729ab will have preference 1 G729a will have preference 2 G726 at rate 16 kbps will have preference 3 G726 at rate 24 kbps will have preference 4 G726 at rate 32 kbps will have preference 5 G726 at rate 40 kbps will have preference 6 G.711u will have preference 7 for T1 and will have preference 8 for E1 G.711a will have preference 7 for E1 card and will have preference 8 for T1 clearChannel will have preference 9 G723H will have preference 10 G723AH will have preference 11 G723L will have preference 12 G723AL will have preference 13 Lossless will have preference 14 If the preference of a codec is zero then that codec will not be used. ::= { vismCodecCnfEntry 4 } SYNTAX SnmpAdminString (SIZE (1..64)) MAX-ACCESS read-write STATUS current DESCRIPTION The local connection option or SDP(Session Description Protocol) descriptor string that VISM would get from the call agent for the codec to be used will be in the form of PCMU, PCMA, G726 at rate 32 kbps, G729a, CCD ..... where in PCMU stands for G711u PCMA stands for G711a and CCD stands for clear channel This object serves as a mapping string, and VISM will use the value configured in this object to match the SDP descriptor string obtained for a codec in a CRCX or MDCX(ModifyConnection) message. Since the entries in this table are implicitly created by default the entry with codec = G.711u will have a value of PCMU G.711a will have a value of PCMA clear channel will have a value of CCD G.726 at rate 32 kbps will have G726 at rate 32 kbps G.726 at rate 16 kbps will have G726 at rate 16 kbps G.726 at rate 24 kbps will have G726 at rate 24 kbps G.726 at rate 40 kbps will have G726 at rate 40 kbps G.729a will have G729a G.729ab will have G729ab G.723.1-H will have G723H G.723.1a-H will have G723AH G.723.1-L will have G723L G.723.1a-L will have G723AL Lossless will have Lossless ::= { vismCodecCnfEntry 5 } SYNTAX Integer32 (0..127) MAX-ACCESS read-write STATUS current DESCRIPTION This object specifies the payload types (PT) of a codec. PT numbers for CODECS are assigned by IANA(Internet assigned number Authority). If in a SDP string we would just receive an IANA type number and not the codec string, then VISM would use the value in this object to derive the actual codec to be used in the bearer path. REFERENCE RFC 1890, Table 2 - RTP Profile for Audio and Video Conferences with Minimal Control.