© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Dial Plans on Cisco IOS Gateways Implementing Multisite Dial Plans on Cisco IOS Gateways

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Multisite Dial Plan Requirements PSTN RequirementDial Plan Components Site-code dialing Call routing and path selection for intersite calls Digit manipulation to support site-code dialing Toll bypass Call routing and path selection to route intersite calls over WAN links with PSTN fallback Digit manipulation to route calls over the WAN or PSTN Tailend hop-off (TEHO) Call routing and path selection to route PSTN calls over the cheapest possible path Digit manipulation to support PSTN fallback

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Site-Code Dialing and Toll Bypass Site codes are assigned to sites Users dial + to reach a user in a specific site –Site codes should be in a single range if possible (e.g., 8XX). Calling number should also include the site code of the calling party –This can be done via digit manipulation. Easy way to solve overlapping numbering plan issues

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Site-Code Dialing and Toll Bypass Example IP WANPSTN Phone Phone Phone Phone Phone1-1 rings. Calling number: User dials San Jose Site Code: 801 Chicago Site Code: 802 Router1 (MGCP) Router3 (CUCME) CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Configuring Site-Code Dialing and Toll Bypass 1. Configure voice translation profiles for VoIP intersite routing. 2. Define dial peers for VoIP intersite routing. 3. Configure voice translation rules and profiles for PSTN intersite routing. 4. Define dial peers for PSTN intersite routing.

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Site-Code Dialing and Toll Bypass Scenario IP WANPSTN Phone Phone Phone Phone San Jose 801 Chicago 802 Router1 H.323 CUCME CM1: CM2: Users should be able to reach other sites via site codes. If WAN fails, the PSTN path should be used. DID: XXXX DID: XXXX CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 1: Configure Voice Translation Profiles for VoIP Intersite Routing Router3 CUCME voice translation-rule 1 rule 1 /^2/ /8022/ voice translation-rule 2 rule 1 /^8022/ /2/ voice translation-profile intersite-out translate calling 1 voice translation-profile intersite-in translate called 2 CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 2: Define Dial Peers for VoIP Intersite Routing Router3 CUCME dial-peer voice 8011 voip destination-pattern session-target ipv4: preference 1 translation-profile incoming intersite-in translation-profile outgoing intersite-out dial-peer voice 8012 voip destination-pattern session-target ipv4: preference 2 translation-profile incoming intersite-in translation-profile outgoing intersite-out CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 3: Configure Voice Translation Rules and Profiles for PSTN Intersite Routing Router3 CUCME voice translation-rule 3 rule 1 /^8012/ / / voice translation-profile 801PSTN translate called 3 CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 4: Define Dial Peers for PSTN Intersite Routing Router3 CUCME dial-peer voice 8012 pots destination-pattern port 0/0/0:23 preference 3 translation-profile outgoing 801PSTN CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Outbound Site-Code Dialing Example IP WANPSTN Phone CUCME dial-peer voice 8011 voip destination-pattern session-target ipv4: preference 1 translation-profile outgoing intersite-out translation-profile incoming intersite-in 1 dial-peer voice 8013 pots destination-pattern port 0/0/0:23 preference 3 translation-profile outgoing 801PSTN 2 ANI DNIS OutgoingIncoming ANI DNIS OutgoingIncoming 1 2 CM2 IP: Router1 H.323 CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Inbound Site-Code Dialing Example IP WANPSTN Phone Router1 H.323 CUCME dial-peer voice 8011 voip destination-pattern session-target ipv4: preference 1 translation-profile outgoing intersite-out translation-profile încoming intersite-in ANI DNIS OutgoingIncoming CM2 IP: CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Tailend Hop-Off TEHO extends the concept of toll bypass. Use the WAN for PSTN calls as much as possible. Use PSTN breakouts closest to the final PSTN destination. Use pure PSTN paths as possible backup.

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Tailend Hop-Off (Cont.) IP WAN Phone Phone Phone Phone San JoseChicago Router1 H.323 CUCME User dials Call is routed to San Jose via the WAN. 2 Local San Jose gateway is used as the PSTN breakout. 3 San Jose PSTN phone rings. 4 DID: XXXX DID: XXXX PSTN CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Configuring TEHO 1. Define the VoIP outbound dial peer for TEHO. 2. Define the VoIP outbound digit manipulation for TEHO. 3. Define the POTS outbound dial peer for TEHO.

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v TEHO Scenario IP WAN Phone Phone Phone Phone San JoseChicago Router1 H.323 CUCME Use the WAN link for calls to the San Jose PSTN. If the WAN fails, use the Chicago PSTN breakout. CM1: CM2: PSTN DID: XXXX DID: XXXX CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 1: Define Outbound VoIP TEHO Dial Peers Router3 CUCME dial-peer voice voip destination-pattern session-target ipv4: preference 1 dial-peer voice voip destination-pattern session-target ipv4: preference 2 CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 2: Define VoIP Outbound Digit Manipulation for TEHO Router3 CUCME voice translation-rule 10 rule 1 /^2/ / / voice translation-profile SJC-TEHO-OUT translate calling 10 dial-peer voice voip translation-profile outgoing SJC-TEHO-OUT dial-peer voice voice translation-profile outgoing SJC-TEHO-OUT CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Step 3: Define Outbound POTS TEHO Dial Peers Router3 CUCME dial-peer voice pots destination-pattern prefix 1408 preference 3 port 0/0/0:23 CUCME = Cisco Unified CallManager Express

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v Summary Multisite dial plans include site-code dialing, toll bypass, and TEHO. Site-code dialing uses the concept of prefixing a site code in front of the actual extension and can be combined with toll bypass to route calls over a WAN link instead of a PSTN connection. Configuring site-code dialing and toll bypass includes multiple dial-peer configuration with appropriate voice translation profiles. TEHO is used to route calls over the WAN to the closest PSTN breakout to avoid costly long distance and international phone charges. TEHO is configured by defining dial peers that route PSTN destined calls first over an IP connection.

© 2006 Cisco Systems, Inc. All rights reserved.GWGK v