Title :
Using T.38 and SIP for real-time fax transmission over IP networks
Author :
Choudhary, Umang ; Perl, Edward ; Sidhu, Deepinder
Author_Institution :
Maryland Center for Telecommun. Res., Maryland Univ., Baltimore, MD, USA
Abstract :
Facsimile (fax) transmission is very important to the world of business. In a world where a significant percentage of long distance public switched telephone network (PSTN) traffic is composed of fax, great savings in toll charges are possible by utilizing IP networks instead. We study the use of T.38 facsimile in conjunction with session initiation protocol (SIP) for transmission of fax traffic over IP networks. Since the interactions of these protocols are not completely standardized, we investigate and propose some practices for this transmission process. Through network simulations of both signaling and data traffic, we determine that real-time fax transmission using SIP is achievable and that it is important to utilize the SIP contact-header for reducing the load on SIP proxy servers and links associated with them
Keywords :
Internet telephony; business communication; facsimile; protocols; telecommunication signalling; telecommunication traffic; IP networks; SIP; SIP contact header; T.38; business communication; data traffic; facsimile transmission; network simulations; proxy server load; real-time fax transmission; session initiation protocol; signaling traffic; voice over IP; Bandwidth; Delay; Facsimile; IP networks; Internet telephony; Network servers; Protocols; Telecommunication switching; Telecommunication traffic; Traffic control;
Conference_Titel :
Local Computer Networks, 2001. Proceedings. LCN 2001. 26th Annual IEEE Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
0-7695-1321-2
DOI :
10.1109/LCN.2001.990771
