SIP Device Requirements1 SIP Telephony Device Requirements SIP Telephony Device Requirements draft-sinnreich-sipping-device-requirements-00.txt Daniel.

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Presentation transcript:

SIP Device Requirements1 SIP Telephony Device Requirements SIP Telephony Device Requirements draft-sinnreich-sipping-device-requirements-00.txt Daniel Petrie SIPPING WG 18 Mar 2002

SIP Device Requirements2 SIP Telephony Device Requirements Buy SIP phones and configure over the network Consistent operation by ISPs and/or Enterprises  Protocols  Configuration processes  Media and codecs  Echo control  Services supported by SIP telephony devices  User interface  LANs and power With companion drafts: "A Framework for SIP User Agent Configuration" "SIP End Point Configuration Data Format Requirements", informational

SIP Device Requirements3 Scope Issues  Line Echo Cancellation – Not applicable Remove ITU-T G.168, not G.165  Acoustic Echo Cancellation  Hands free/Speeker phone – Not in scope Price point/vendor decision  Handset – In scope (the thing you hold not the whole device) Mechanical & Accoustic coupling:  ANSI/EIA/TIA-810-A-2000  TIA/EIA-579-A  LAN Based devices – In scope (e.g. Fixed and wireless)  Mobile Devices – Not in scope (e.g. 3G)

SIP Device Requirements4 Misc. Issues  SHOULD/MUST provide translation from local emergency number to sos URL  SHOULD provide ability to disallow REFER Larger scope than REFER Address this in: draft-ietf-sipping-cc-framework-00.txt  Make this a SIPPING WG Item

SIP Device Requirements5 Comments received on the Requirements I-D Robert Born:  Acoustic properties: Specify ITU-T G.168, not G.165  Acoustic-electrical for IP/packet: ANSI/EIA/TIA-810-A-2000  Stability and minimum loss: TIA/EIA-810-A and TIA/EIA-579-A Yaron Sheffer:  DHCP is a MUST  HTTP and DNS in client, server or both  Emergency URL – write just “sos” for non-technical people  ILBR codec: Need reference draft  Supported services: In server or phone?  Disabling SIP REFER – “SHOULD” for security reasons Karl Pospisek:  GSM-EFR codec MUST be supported, though GSM-AMR is the 3G choice Ashutosh Dutta:  Used Columbia SIPC (also in Linux) IPAQs/802.11b, CDPD, CDMA1XRTT Count: 1 for wireline phones, 1 generic SIP, 2 for wireless devices