[cisco-voip] Suggestions on book on SIP protocol?

[ROZA, Ariel]

People,

Can anyone give me a good reference on books that explain the SIP Protocol?

I already have a significant working knowledge on SIP. I have set up some trunks On CUCM and CUBE and troubleshooted many more. But I am still lacking on the WHYs of many things. So I am looking, for example, for theoretical explanations of SIP call flows and the variations of headers and options, without being dry as hell as a RFC or Cisco technical documents. Some good book that can be used as reference material.
One of the issues I have with Cisco tech notes is that when they do examples-by-debug often they lack explanations or discussion of possibilities.

What have you people read and can recommend?

Regards,

Ariel Pablo Roza
Post Sales UC Engineer / Southern Cone [cid:image005.png at 01D761DD.4AD1D050]

t: (011) 5282-0458
m: (011) 5017-4417
ariel.roza at la.logicalis.com
Av. Belgrano 955 - Piso 20 - C1092AAJ
CABA - Buenos Aires - Argentina
www.la.logicalis.com<http://www.la.logicalis.com/>

[cid:image003.png at 01D761DB.C59AD630]
[firmacalidad-1]

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