Managing Calls Using IP Telephony

[host_module.1/t38parameters] t38_max_bit_rate=14400

t38_fax_fill_bit_removal=false

t38_fax_transcoding_MMR=false

38_fax_transcoding_JBIG=false

t38_fax_rate_management=transferredTCF

t38_fax_udp_EC=t38UDPRedundancy

t38_UDPTL_redundancy_depth_image=2

t38_UDPTL_redundancy_depth_control=1

t38_t30_fast_notify=false

BFV APPLICATION BT_ZERO(args);

args.phonenum = “john.brooktrout.com” args.call_protocol_code = CALL_PROTOCOL_FAX BfvLineOriginateCall(lp, &args);

SIP INVITE

1INVITE sip:john.brooktrout.com SIP/2.0

2From: <sip:user@brooktrout.com>;tag=0-13c4-40aa926b-1b5fbbff-974

3To: <sip:john.brooktrout.com>

4Call-ID: 47081b4-0-13c4-40aa926b-1b5fbbeb-2086@brooktrout.com

5CSeq: 1 INVITE

6Via: SIP/2.0/UDP 208.129.16.72:5060;branch=z9hG4bK-40aa926b-1b5fbbff-e9d

7Contact: <sip:208.129.16.72>

8Max-Forwards: 20

9Content-Type: application/SDP

10Content-Length: 452

11v=0

12o=username 2209448059 0759125174 IN IP4 208.129.16.72

13s=session_name

14i=session_description

15u=user@brooktrout.com

16e=email@brooktrout.com

17p=+1-4085551212

18t=0 0

19m=audio 56004 RTP/AVP 0

20c=IN IP4 208.129.52.105

21a=rtpmap:0 pcmu/8000

22m=image 56004 udptl t38

23c=IN IP4 208.129.52.105

24a=T38FaxVersion:0

25a=T38MaxBitRate:14400

26a=T38FaxRateManagement:transferredTCF

29a=T38FaxUdpEC:t38UDPRedundancy

SIP INVITE DESCRIPTION

1Defined by args.phonenum field passed to BfvLineOriginateCall().

2Defined by the sip_From setting in the call control configuration file.

3Defined by args.phonenum field passed to BfvLineOriginateCall().

November 2009

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Dialogic 6.2 manual SIP Invite, November 223