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SIP RFC 5411 T-shirt

Call Theory

Regular price $25.00

Session Initiation Protocol, or SIP, is a popular VoIP telecom protocol used to setup and manage calls and messages. There are a ton of RFCs out there related to SIP (RFCs 3261, 3263, 3264, etc.) so in came RFC 5411 to be your guide to all of the SIP related RFCs. 

It's known as: A Hitchhiker's Guide to the Session Initiation Protocol (SIP)

The tri-blend fabric in our shirt creates a vintage, fitted look. Excellent durability makes this t-shirt withstand repeated washings and still remain comfortable.

• Tri-blend construction (50% polyester/25% combed ring-spun cotton/25% rayon)
• Pre-shrunk fabric
• 40 singles thread weight
• Comfortable and durable
• Contemporary fit
• Lightweight

Size guide

  S M L XL 2XL
Length (inches) 28 29 30 31 32
Width (inches) 18 20 22 24 26
  S M L XL 2XL
Length (cm) 71 74 76 79 81
Width (cm) 46 51 56 61 66