My understanding of this is that the cisco (despite claims to the
contrary) are trying to do the c=0.0.0.0 hold, right?
On 8/13/10 4:57 PM, Michael Scheidell wrote:
# rfc_2543 is OBSOLETE, c=0.0.0.0 hold is OBSOLETE, poly's use
a=sendonly, rfc_3264
# supposedly, all cisco phones from fw 7-5 on use 3264.
rfc_2543_hold: 0
Connection Information (c): IN IP4 0.0.0.0
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 0.0.0.0
if I look at the settings for the polycom, they say this:
useRFC2543hold (Default: unchecked)
If checked, use the obsolete c=0.0.0.0 RFC2543 technique, otherwise, use
SDP media direction attributes (such as a=sendonly) per RFC 3264 when
initiating hold. *In either case, the phone processes incoming hold
signaling in either format.*
Something/someone is lying.
because the polycom doesn't like it:
Session Initiation Protocol
Status-Line: SIP/2.0 400 Bad Request
Status-Code: 400
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP
10.72.0.2;branch=z9hG4bK-XX-6e10of0y4PUcUEoQj`C2ZEoxvA
Transport: UDP
Sent-by Address: 10.72.0.2
Branch: z9hG4bK-XX-6e10of0y4PUcUEoQj`C2ZEoxvA
Via: SIP/2.0/UDP 10.72.0.243:5060;branch=z9hG4bK34c2eb86
Transport: UDP
Sent-by Address: 10.72.0.243
Sent-by port: 5060
Branch: z9hG4bK34c2eb86
From:
<sip:1...@secnap.com;user=phone>;tag=000750d54eba000a5b917c33-3fc2612a
SIP from address: sip:1...@secnap.com
SIP tag: 000750d54eba000a5b917c33-3fc2612a
To: "Michael Scheidell"
<sip:1...@secnap.com>;tag=73987285-C80F6772
SIP Display info: "Michael Scheidell"
SIP to address: sip:1...@secnap.com
SIP tag: 73987285-C80F6772
CSeq: 101 INVITE
Sequence Number: 101
Method: INVITE
Call-ID: c005c616-617bf707-594a4...@10.72.0.254
Record-Route:
User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.3.0439
Accept-Language: en
Content-Length: 0
--
Michael Scheidell, CTO
o: 561-999-5000
d: 561-948-2259
ISN: 1259*1300
> *| *SECNAP Network Security Corporation
* Certified SNORT Integrator
* 2008-9 Hot Company Award Winner, World Executive Alliance
* Five-Star Partner Program 2009, VARBusiness
* Best in Email Security,2010: Network Products Guide
* King of Spam Filters, SC Magazine 2008
--
Michael Scheidell, CTO
o: 561-999-5000
d: 561-948-2259
ISN: 1259*1300
> *| *SECNAP Network Security Corporation
* Certified SNORT Integrator
* 2008-9 Hot Company Award Winner, World Executive Alliance
* Five-Star Partner Program 2009, VARBusiness
* Best in Email Security,2010: Network Products Guide
* King of Spam Filters, SC Magazine 2008
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