Enabling Single-Site On-Net Calling

1. Understanding Endpoints in Cisco Unified Communications Manager Enabling Single-Site On-Net Calling

2. Outline Cisco Unified Communications ManagerEndpoints Overview Cisco Unified Communications Manager Endpoint Feature Support Cisco IP Phones Boot Sequence H.323 Endpoint Support in Cisco Unified Communications Manager SIP Third-Party IP Phone Support in Cisco Unified Communications Manager

3. Cisco Unified Communications Manager Endpoints Overview

4. Cisco Unified Communications Manager Endpoint Overview Third-Party SIP Endpoints Cisco Unified Communications Manager 6.0 Cisco Unified IP Phones SCCP Video Phones SCCP SIP H.323 Cisco SCCP-Only Phones Analog Station Gateways Third-Party H.323 Endpoints

5. Cisco Unified Communications Manager Endpoint Support Cisco IP phone models displayed in italic are end-of-sale.

6. Cisco Unified Communications Manager Endpoint Feature Support

7. Unified CM Endpoint Telephony Feature Support Dependencies Unified CM supports endpoints using SCCP, SIP, and H.323: Cisco proprietary SCCP: Only used by Cisco IP phones (few third-party endpoints exist) Rich set of telephony features, most features supported on all Cisco IP phone models Standard SIP or H.323: Supported on all standard compliant third-party phones and few Cisco IP phones Provide only basic telephony features Standard SIP with Unified CM extensions: Only used by Cisco IP phones Rich set of telephony features, but support depends heavily on Cisco IP phone model

8. Unified CM Telephony Feature Support by Protocol and Type of Endpoint Cisco IP phone models displayed in italic are end-of-sale.

9. Cisco IP Phone Model Differences The wide range of Cisco IP phones offers a wide choice of hardware capabilities: Screen: resolution, size, and color; touch-screen? Codec support: G.729, G.711, iLBC, wideband? LAN: speed, PC port? Buttons, navigation clusters? Speakerphone and headset support? Number of lines? Special features: video, conference station, Wi-Fi?

10. Entry-Level Cisco IP Phones Cisco Unified IP Phone 7906 Cisco Unified IP Phone 7911 • Basic-featured Cisco IP phones for low-to-medium telephone use • Single line or directory number • Message waiting indicator

11. Midrange Cisco IP Phones Full-featured Cisco IP phones for medium-to-high telephone use Multiline Message waiting indicator Large pixel-based displays Integrated switches Built-in headsets and high-quality speakerphones Cisco Unified IP Phone 796[012] Cisco Unified IP Phone 794[012] 7940 7941 7960 7961

12. Upper-End Cisco IP Phones Addresses needs of executives Large, color, pixel-based displays Touch-sensitive display on 797[015] models Two to eight telephone lines, or combinations of lines and direct access to telephony features Four or five interactive softkeys Built-in headsets and high-quality, hands-free speakerphones Cisco UnifiedIP Phone 7945 Cisco UnifiedIP Phone 7965 Cisco UnifiedIP Phone 797[015] 7975 7970

13. Other Cisco IP Phones Cisco UnifiedWireless IP Phone 792[01] Cisco Unified IP Phone 7931 Cisco Unified IP Phone 7985 Cisco Unified IP Conference Station 7936 7921

14. Special Functions Used By Cisco IP Phones Cisco Discovery Protocol : Cisco IP phones generate and listen to Cisco Discovery Protocol messages. DHCP: Cisco IP phones can get their IP addresses via DHCP. Identification by MAC address: Phones are identified by a unique device ID and not by their IP address. TFTP: Cisco IP phones are configured automatically by downloading device-specific configuration files from a TFTP server. PoE: Phones can be powered over the Ethernet network cable. PC Port: Phones allow a PC connected to the phone to share a single connection to the switch. Note: PoE and PC port support is not available on all models.

15. Cisco IP Phones Boot Sequence

16. Cisco SCCP IP Phone Startup Process UnifiedCM DHCP Cisco TFTP 6 3 1 4 5 2 • Cisco IP phone obtains power from the switch • Cisco IP phone loads locally stored image • Switch provides VLAN information to Cisco IP phone using Cisco Discovery Protocol • Phone sends DHCP request; receives IP information and TFTP server address

17. Cisco SCCP IP Phone Startup Process (Cont.) UnifiedCM DHCP Cisco TFTP 6 3 1 4 5 2 • Cisco IP phone gets configuration from TFTP server • Cisco IP phone registers with Cisco Unified Communications Manager server • Unified CM sends softkey template to SCCP phone using SCCP messages.

18. Boot Sequence Differences Between Cisco SCCP and SIP Phones The boot sequences for SIP and SCCP are similar. The first 4 steps remain the same. The main differences are : SEP<mac>.cnf.xml: The SIP phones get all of their configuration from the configuration file. Therefore, the SEP<mac>.cnf.xml file is much larger for SIP than for SCCP. Dialplan file (optional): The SIP phones can download and use local dial plans. Softkey file: The SIP (Type-B only) phones download their softkey sets in this XML file.

19. Cisco SIP Phone Startup Process 1. CTL File (If present) 2. SEP<mac>.cnf.xml 3. XMLDefault.cnf.xml 4. Loads File 5. Dial rules (Optional) 6. Establish Connection 7a. Register 7b. 200 OK 8. Localization Files 9. Softkeys (Type-B Only) 10. Custom Ringers Cisco Unified Communications Manager Cisco TFTP Cisco SIP phone

20. H.323 Endpoint Support in Cisco Unified Communications Manager

21. Unified CM H.323 Endpoint Support Cisco Unified Communications Manager supports any third-party H.323 phone that complies with the H.323 standards. H.323 phones can have multiple lines. H.323 endpoints can be both voice or video devices. H.323 endpoints are normally H.323 terminal devices, especially video endpoints. H.323 phones do not register with Cisco Unified Communications Manager and only have to be known by IP address. H.323 phones need to have their own dial plan and act as a peer to Cisco Unified Communications Manager. H.323 client consumes two license units.

22. H.323 Endpoints Cisco Unified IP Phone 7905 can be loaded with an H.323 firmware. From Cisco Unified Communications Manager perspective, they look like any other (third-party) H.323 endpoint. Other commonly used H.323 phones are Microsoft Windows NetMeeting or H.323 video devices from vendors like Tandberg or Sony. Cisco 7905 IP Phone Third-Party H.323 Endpoints

23. Features Not Supported for H.323 Endpoints H.323 phones only support a few features compared to Cisco IP phones using SCCP or SIP. The features that are not supported include but are not limited to: MAC address registration Phone buttons templates Softkey templates Telephony features and applications such as: IP phone services Cisco Unified Communications Manager Assistant Cisco Unified Video Advantage Call Pickup Barge Presence, etc.

24. H.323 Phone Configuration Requirements H.323 endpoints typically require fewer configuration steps on the Cisco Unified Communications Manager compared to other types of endpoints. Configuration steps are as follows: Configure the H.323 phone in Cisco Unified Communications Manager with IP address and DN(s). Configure the H.323 phone with the IP address of Cisco Unified Communications Manager and specify the numbers that should be routed to Cisco Unified Communications Manager.

25. SIP Third-Party IP Phone Support in Cisco Unified Communications Manager

26. Third-Party SIP Phone Support There are two categories of RFC 3261-compliant, third-party SIP phones supported by Cisco Unified Communications Manager: Basic phones support one line and consume three license units. Advanced phones support up to eight lines and video, and consume six license units. Third-party SIP phones register with Cisco Unified Communications Manager but are not recognized by a device ID such as a MAC address. SIP Digest Authentication is used instead to identify the endpoint that is trying to register. Configuration is performed on Cisco Unified Communications Manager and on the phone itself.

27. Third-Party SIP Phones Cisco Unified IP Phones7940 and 7960 can be loaded with a standard SIP software, which is different from using SIP with Cisco Unified Communications Manager extensions on these phones. From Cisco Unified Communications Manager perspective, these phones look like any other (third-party) SIP endpoints. Many third-party SIP phones are available on the market. Cisco 7960 IP Phone Third-Party SIP Endpoints

28. Features Not Supported for Third-Party SIP Endpoints Third-party SIP phones only support a few features compared to Cisco IP phones using SCCP or SIP. The features that are not supported include but are not limited to the following: MAC address registration Phone button template Softkey templates Telephony features and applications such as: IP phone services Cisco Unified Communications Manager Assistant Cisco Unified Video Advantage Call Pickup Barge Presence

29. SIP Digest Authentication Digest authentication provides authentication of SIP messages by a username and a keyed MD5 hash. Digest authentication is based on a client/server model. Cisco Unified Communications Manager can challenge SIP endpoints and trunks, but can only respond to challenges on SIP trunks. Digest authentication is used to identify a third-party SIP device, because no MAC address is provided in the registration message. Cisco Unified Communications Manager can be configured to check the key (i.e. digest credentials) of a username used by a third-party SIP device, or to ignore the key and only search for the username.

30. Third-Party SIP Phone Registration Process Using Digest Authentication Check directory number and accept registration Configuration Database Unified CM Deviceconfig Line config (1001) Find associated device REGISTER 1001 username=“3rdpsip” Find end user “3rdpsip” End-user config “3rdpsip” directory number = 1001 AuthID = “3rdpsip” Third-Party SIP Phone

31. Third-Party SIP Phone Configuration Requirements The following steps have to be performed when configuring third-party SIP endpoints: Configure an end user in Cisco Unified Communications Manager. Configure the third-party SIP phone and its directory numbers in Cisco Unified Communications Manager. Associate the third-party SIP phone with the end user. Configure the third-party SIP phone with the IP address of Cisco Unified Communications Manager (proxy address), end-user ID, digest credentials (optional), and directory numbers.

32. Summary Cisco Unified Communications Manager supports SIP,SCCP, and H.323 protocol for endpoints. Feature differences exist between SIP, SCCP, and H.323 endpoints and between different IP phone models. Cisco IP phones follow a specific boot process, allowing the IP phone to learn a voice VLAN ID, obtain IP configuration from a DHCP server, and download its configuration from a TFTP server. H.323 phones have to be configured on both Cisco Unified Communications Manager and also manually on the phone. Third-party SIP phones register by their directory number and a username, provided by digest authentication.