Comparative Study of M/M/1 and M/D/1 Models of a SIP Proxy Server

Subramanian, Sureshkumar V.; Dutta, Rudra

doi:10.1109/atnac.2008.4783357

Cited by 15 publications

(2 citation statements)

References 10 publications

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“…The SIP Proxy Server is modeled as queuing model with six queues. In our earlier work, we proposed an analytical / /1 model, in which there are 6 queues in tandem to process various SIP packets with the deterministic service time [11]. The SIP Proxy Server software module identifies and processes each SIP message based on the unique address for each session until the session is established and tore down.…”

Section: Motivationmentioning

confidence: 99%

Performance Measurements and Analysis of M/M/c Queuing Model Based SIP Proxy Servers in Local and Wide Area Networks

Subramanian

Dutta

2010

2010 International Conference on Advances in Recent Technologies in Communication and Computing

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In recent years, Internet Protocol (IP) telephony is becoming popular because it offers more flexibility in the implementation of new features and services. Session Initiation Protocol (SIP) is a peer-to-peer, multimedia signaling protocol standardized by the Internet Engineering Task Force (IETF) plays a vital role in providing services to IP telephony. SIP is ASCII-based, resembling HTTP, and reuses existing IP protocols such as Domain Name Service (DNS), Real Time Protocol (RTP), Session DescriptionProtocol (SDP) etc. to provide media setup and teardown. The SIP Proxy Server (SPS) is a software application that provides call routing services for the SIP based IP telephony network. The efficiency of this process can create large scale, highly reliable packet voice networks for service providers and enterprises. We established that the efficient design and implementation of the SPS architecture can enhance the performance characteristics of a SPS significantly. In this paper, we studied the SPS performance that can be characterized by its transaction states of each SIP session of a / / based SIP proxy server performance model in Local and Wide Area Networks.

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Section: Motivationmentioning

confidence: 99%

Performance Measurements and Analysis of M/M/c Queuing Model Based SIP Proxy Servers in Local and Wide Area Networks

Subramanian

Dutta

2010

2010 International Conference on Advances in Recent Technologies in Communication and Computing

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“…Analytical model (queueing network composed of six M|M|1 queues) for estimation of mean response time for call setup in SIP network is presented in [11]. Analogous model but with constant service time was analyzed in [12]. In [13] and [14] results of analytical modeling of SIP proxy server as M|M|c queue are compared with experimental data.…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Message Delay in SIP Proxy Server

Abaev,

Razumchik,

Uglov

2014

JTIT

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Single hop delay of SIP message going through SIP proxy server operating in carriers backbone network is being analyzed. Results indicate that message sojourn times inside SIP server in most cases do not exceed order of tens of milliseconds (99% of all SIP-I messages experience less than 21 ms of sojourn delay) but there were observed very large delays which can hardly be attributed to message specific processing procedures. It is observed that delays are very variable. Delay components distribution that is to identified are not exponentially distributed or nearly constant even per message type or size. The authors show that measured waiting time and minimum transit time through SIP server can be approximated by acyclic phase-type distributions but accuracy of approximation at very high values of quantiles depends on the number outliers in the data. This finding suggests that modeling of SIP server with queueing system of G|PH|c type may server as an adequate solution.

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Summary and Future Work

Subramanian

Dutta

2013

Measuring SIP Proxy Server Performance

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Comparative Study of M/M/1 and M/D/1 Models of a SIP Proxy Server

Cited by 15 publications

References 10 publications

Performance Measurements and Analysis of M/M/c Queuing Model Based SIP Proxy Servers in Local and Wide Area Networks

Performance Measurements and Analysis of M/M/c Queuing Model Based SIP Proxy Servers in Local and Wide Area Networks

Statistical Analysis of Message Delay in SIP Proxy Server

Summary and Future Work

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