AARNet Copyright 2011 Network Operations Cisco Unified Communications Manager SIP Trunking Bill Efthimiou APAN33 SIP workshop February 2012.

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Presentation transcript:

AARNet Copyright 2011 Network Operations Cisco Unified Communications Manager SIP Trunking Bill Efthimiou APAN33 SIP workshop February 2012

AARNet Copyright 2011 Agenda 2 Basic CUCM setup Partitions Calling Search Spaces Number Manipulation SIP trunking Early offer vs Delayed offer Demo call via workshop SIP server.

AARNet Copyright 2011 Basic CUCM Setup – Activate required services 3

AARNet Copyright 2011 Basic CUCM Setup – Cisco Unified CM 4 Auto Registration

AARNet Copyright 2011 Basic CUCM Setup – Cisco Unified CM Group 5 Redundancy primary vs secondary

AARNet Copyright 2011 Basic CUCM Setup – Phone NTP References 6

AARNet Copyright 2011 Basic CUCM Setup – Date/Time Groups 7

AARNet Copyright 2011 Basic CUCM Setup – Locations (Call Admission Control) 8 Use locations to implement call admission control in a centralized call-processing system. Call admission control enables you to regulate audio quality and video availability by limiting the amount of bandwidth that is available for audio and video calls over links between the locations.

AARNet Copyright 2011 Basic CUCM Setup – Device Pool

AARNet Copyright 2011 Basic CUCM Setup – Enable CDR

AARNet Copyright 2011 Basic CUCM Setup – Media Resource Group

AARNet Copyright 2011 Basic CUCM Setup – Media Resource Group List 12

AARNet Copyright 2011 CUCM Partitions The dial plan entries that you may place in a partition include IP phone directory numbers, translation patterns, route patterns, CTI route points, and voic ports. If two or more dial plan entries (directory numbers, route patterns, or so forth) overlap, Unified CM selects the entry with the closest match (most specific match) to the dialed number. In cases where two dial plan entries match the dialed pattern equally, Unified CM selects the dial plan entry that appears first in the calling search space of the device making the call. Source: Cisco Unified Communications System 8.x SRND

AARNet Copyright 2011 CUCM Calling Search Spaces A calling search space defines which partitions are accessible to a particular device. Devices that are assigned a certain calling search space can access only the partitions listed in that calling search space. Attempts to dial a DN in a partition outside that calling search space will fail, and the caller will hear a busy signal. If you configure a calling search space both on an IP phone line and on the device (phone) itself, Unified CM concatenates the two calling search spaces and places the line's calling search space in front of the device's calling search space. Source: Cisco Unified Communications System 8.x SRND

AARNet Copyright 2011 CUCM – Partition Order 15 Source: Cisco Unified Communications System 8.x SRND

AARNet Copyright 2011 CUCM – Concatenation of Line and Device CSS 16 Source: Cisco Unified Communications System 8.x SRND

AARNet Copyright 2011 Number Manipulation – Route Pattern

AARNet Copyright 2011 Number Manipulation – Translation Pattern

AARNet Copyright 2011 Number Manipulation – Route List Detail

AARNet Copyright 2011 SIP Trunking – CUCM 8.5 SIP trunks provide connectivity to other SIP devices such as gateways, SIP proxies, applications, and other Unified CM clusters. Today, SIP is arguably the most commonly chosen protocol when connecting to service providers and Unified Communications applications. Cisco Unified CM 8.5 and later releases provide the following SIP trunk and call routing enhancements: Can run on all Unified CM nodes Up to 16 destination IP addresses per trunk SIP OPTIONS ping keepalives SIP Early Offer support for voice and video calls (insert MTP if needed) QSIG over SIP SIP trunk normalization and transparency Supports the use of route lists on all Unified CM nodes The SIP trunk features available in the current release of Unified CM make SIP the preferred choice for new and existing trunk connections. Source: Cisco Unified Communications System 8.x SRND

AARNet Copyright 2011 SIP Trunk Configuration – 8.0

AARNet Copyright 2011 SIP Trunk Configuration – 8.0 (continued)

AARNet Copyright 2011 SIP Trunk Security Profile

AARNet Copyright 2011 Delayed offer vs Early offer Delayed offer = NO SDP in original SIP INVITE Early offer = SDP included as part of original SIP INVITE With delayed offer, caller makes the final codec decision. With early offer, called makes the final codec decision. Prior to CUCM version 8.5, SIP trunk only supported delayed offer. AARNet’s experience with delayed offer was, issues when calling MCUs. MCU’s support many codec’s. Therefore, the responding SIP/SDP body, is very large and causes massive fragmentation issues. Signaling or negotiation would often fail.

AARNet Copyright 2011 Delayed offer- trace 25

AARNet Copyright Early offer- trace

AARNet Copyright CUCM Early Offer enabled Copy “Standard SIP Profile” Standard SIP Profile  Standard SIP Profile- w early offer.

AARNet Copyright CUCM Early Offer enabled

AARNet Copyright Thank you Questions ?