1. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-1 Enabling Single-Site On-Net Calling Implementing MGCP Gateways in Cisco Unified Communications Manager

2. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-2 Outline  Cisco Unified Communications Manager and MGCP Gateways  MGCP Gateway Support in Cisco Unified Communications Manager and Cisco IOS Gateways  MGCP Gateway Configuration in Cisco Unified Communications Manager  Cisco IOS Gateway MGCP Configuration

3. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-3 Cisco Unified Communications Manager and MGCP Gateways

4. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-4 MGCP Gateways  MGCP (defined under RFC 2705) is a master-slave protocol  Allows a call control device (such as Unified CM) to take control of a specific port on a gateway  Provides centralized gateway administration and highly scalable gateway solutions: –Allows complete control of the dial plan from Unified CM –Allows Unified CM per-port control of gateway connections to PSTN, legacy PBX/VM systems, analog phones, etc.  Allows use of plain-text commands between the Unified CM and the gateway over UDP port 2427  Gateway must be supported by Unified CM for MGCP (use Cisco Software Advisor tool to verify compatibility)

5. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-5 Endpoint Identifiers MGCP PSTN/ PBX T1/E1 VWIC 2/1/1 FXS VWIC 2/1/1 AALN/S2/SU1/1@gw1.domain.com S1/SU1/DS1-1@gw1.domain.com AALN/S2/SU1/1@gw1.domain.com Endpoint type (analog line) Slot 2Subunit 1 Port 1 S1/SU1/DS1-1@gw1.domain.com Slot 1Subunit 1Port 1 Endpoint type (T1/E1 trunk) Hostname

6. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-6 MGCP and SCCP Interaction  Cisco IP phones use SCCP to communicate with Unified CM  Unified CM uses MGCP to control the gateway  Actual voice data is through RTP directly between the two devices Unified CM Rel. 6.0 MGCP PSTN Gateway SCCP RTP/UDP

7. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-7 MGCP Gateway Support in Cisco Unified Communications Manager and Cisco IOS Gateways

8. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-8 MGCP Support in Cisco Unified Communications  Wide range of supported Cisco IOS router platforms  Wide range of supported analog and digital interfaces  Wide range of analog and digital features  Cisco Unified Communications Manager configuration server –Cisco IOS MGCP gateway can pull its configuration from Cisco Unified Communications TFTP server –Eliminates the need for manual gateway configuration  PRI backhaul support –For Cisco IOS gateways with ISDN PRIs –Cisco Unified Communications Manager takes control of ISDN D channel

9. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-9 Cisco Unified Communications Manager Configuration Server 10.1.1.1 10.1.1.101 T1/E1 VWIC 1/1/1 Unified CM MGCP Gateway TFTP download PSTN Administrator configures MGCP gateway in Unified CM Gateway configured to use configuration server. GW(config)#ccm-manager config server 10.1.1.1 GW(config)#ccm-manager config Unified CM creates file with MGCP configuration for gateway File is stored on Cisco TFTP server Gateway pulls configuration file and applies MGCP configuration

10. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-10 PRI Backhaul  D-channel call-setup signals need to be carried in their raw form back to the Unified CM to be processed  Gateway terminates data link layer and passes the rest of signals (Q.931 and above) to Unified CM via TCP port 2428  D-channel will be down unless it can communicate with Unified CM PRI Backhaul T1 PRI ISDN Call Ctrl Q.931 TCP Q.921TCP Q.931 Q.921 CUCMGatewayPSTN CO

11. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-11 MGCP Gateway Configuration in Cisco Unified Communications Manager

12. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-12 Cisco Unified Communications Manager Gateway Configuration Procedure 1.Add an MGCP gateway. 2.Configure the MGCP gateway. 3.Add voice modules. 4.Add VICs to the module. 5.Configure MGCP endpoints.

13. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-13 Step 1: Add an MGCP Gateway 6.From Unified CM Administration, choose Device > Gateway. 7.Click the Add New button. The Add a New Gateway window displays. 8.From the Gateway Type drop-down list box, choose the appropriate MGCP gateway. 9.Click Next.

14. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-14 Step 1: Add an MGCP Gateway (Cont.) 10.Select MGCP for the gateway protocol. 11.Click Next.

15. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-15 Step 2: MGCP Gateway Configuration Enter gateway name. Enter description. Select Cisco Unified Communications Manager Group. Configure global parameters Get help for global parameters

16. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-16 Steps 3 and 4: Add MGCP Endpoints by Selecting Modules and Voice Interface Cards Select module (per slot) Select VIC (per module) MGCP endpoint(s) are shown and can be clicked for endpoint configuration

17. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-17 Step 5: Configure the MGCP Endpoint Note: MGCP endpoint configuration parameters differ per type of endpoint. Enter endpoint description and select device pool Verify ISDN PRI interface configuration and change if required

18. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-18 Step 5: Configure the MGCP Endpoint (Cont.) Verify ISDN protocol configuration and change if required Verify product-specific configuration and change if required Note: MGCP endpoint configuration parameters differ per type of endpoint. Click for help about configuration parameters

19. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-19 Cisco IOS Gateway MGCP Configuration

20. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-20 Cisco IOS Gateway MGCP Configuration Overview Recommended method (configuration server): 1.Specify the IP address of the configuration server (Unified CM TFTP server) 2.Enable configuration download 3.Optional: Modify automatically applied MGCP configuration Alternative (manual) method: 1.Specify primary and redundant call agent (Unified CM ) servers 2.Configure required global MGCP parameters 3.Enable MGCP on POTS dial peers 4.Enable MGCP

21. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-21 Configuring Cisco IOS Gateway for MGCP Using a Configuration Server Prerequisites:  MGCP gateway needs to be configured in Unified CM  Gateway hostname must match name specified in Unified CM gateway configuration  Specifies Unified CM TFTP server hosting the gateway configuration XML file  Enables gateway to pull configuration from TFTP server router(config)#ccm-manager config server router(config)#ccm-manager config

22. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-22 Configuring Cisco IOS Gateway for MGCP – Example 10.1.1.1 10.1.1.101 E1 0/3/0 Unified CM MGCP Gateway TFTP download PSTN controller E1 0/3/0 framing hdb3 linecode crc4 pri-group timeslots 1-31 service mgcp interface Serial0/3/0:15 isdn switch-type primary-net5 isdn incoming-voice voice isdn bind-l3 ccm-manager ccm-manager mgcp ccm-manager music-on-hold ccm-manager config server 10.1.1.1 ccm-manager config mgcp mgcp call-agent 10.1.1.1 2427 service-type mgcp version 0.1 mgcp rtp unreachable timeout 1000 action notify mgcp modem passthrough voip mode nse mgcp package-capability rtp-package mgcp package-capability sst-package mgcp package-capability pre-package no mgcp package-capability res-package no mgcp package-capability fxr-package no mgcp timer receive-rtcp mgcp sdp simple mgcp rtp payload-type g726r16 static mgcp profile default Only red- colored, bold commands have been manually configured. Black-colored commands have been added via TFTP.

23. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-23 Summary  MGCP provides centralized gateway administration and highly scalable gateway solutions. It allows Cisco Unified Communications Manager to take control of a specific port on a voice gateway.  Cisco Unified Communications Manager supports various MGCP gateway router platforms and interfaces. The gateway MGCP configuration can be provided by Cisco Unified Communications Manager for TFTP download.  To configure MGCP in Cisco Unified Communications Manager, add an MGCP gateway, add voice modules, add VICs, and then configure the VICs.  Configure Cisco IOS MGCP gateways to pull the configuration from Cisco Unified Communications Manager to reduce manual configuration efforts.

24. © 2008 Cisco Systems, Inc. All rights reserved.CIPT1 v6.0—4-24