Outbound Dial Peer Group as an Inbound Dial-Peer Destination

Overview

This feature can group multiple outbound dial peers into a dial-peer group and configure this dial-peer group as the destination of an inbound dial peer.

You can group up to 20 outbound (SIP) dial peers into a dial-peer group and configure this dial-peer group as the destination of an inbound dial peer. Once an incoming call is matched by an inbound dial peer with an active destination dial-peer group, dial peers from this group are used to route the incoming call. No other outbound dial-peer provisioning to select outbound dial peers is used.

A preference can be defined for each dial peer in a dial-peer group. This preference is used to decide the order of selection of dial peers from the group for the setup of an outgoing call.

You can also specify various dial-peer hunt mechanism using the existing dial-peer hunt command.


Note

H.323 protocol is no longer supported from Cisco IOS XE Bengaluru 17.6.1a onwards. Consider using SIP for multimedia applications.

Feature Information

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1. Feature Information

Feature Name

Releases

Feature Information

Support for POTS dial-peer

Baseline Functionality

An outgoing POTS dial peer can be part of a dial-peer group. An inbound POTS dial peer can have a dial-peer group as the destination.

Restrictions

  • If a dial-peer group is in the shutdown state, regular dial-peer search occurs.

  • If all dial-peers in an active dial-peer group are unavailable, call is disconnected.

  • Calls are statically routed to one of the dial-peers in the active dial-peer group.

  • The destination-pattern command is required on the outbound dial-peer even though matching is not done based on this command.

  • The outgoing call setup is deferred until inter-digit timer expires or a terminator is entered.

  • Dial-peer group works only with valid E.164 pattern.

For POTS dial-peers:

  • Two-stage dialing is not supported.

  • Overlapping dialing is not supported.

  • TCL and VXML routing changes are not supported.

  • Digit-stripping is not supported.

Configure Outbound Dial-Peer Group as an Inbound Dial-Peer Destination

Perform this task to configure a dial-peer group with multiple outbound peers and an inbound dial peer referencing this dial-peer group as a destination.

Before you begin

  • Configure SIP outbound dial peers to be associated with a dial-peer group.

  • For an outbound POTS dial peer, ensure that destination-pattern .T and no digit-strip are configured to avoid unexpected dialed digit strip.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. dial-peer voice outbound-dial-peer-id [voip | pots]
  4. destination-pattern pattern
  5. no digit-strip for POTS dial peers.
  6. exit
  7. (Optional) dial-peer hunt hunt-order-number
  8. voice class dpg dial-peer-group-id
  9. dial-peer outbound-dial-peer-id [preference preference-order]
  10. (Optional) description string
  11. exit
  12. dial-peer voice inbound-dial-peer-id [voip | pots]
  13. destination dpg dial-peer-group-id
  14. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enters privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

dial-peer voice outbound-dial-peer-id [voip | pots]

Example:

For VoIP dial peer: 

Device(config)# dial-peer voice 123 voip

Example:

For POTS dial peer: 

Device(config)# dial-peer voice 345 pots

Defines a dial peer and enters dial peer configuration mode.

Step 4

destination-pattern pattern

Example:

For VoIP Dial Peers 
Device(config-dial-peer)# destination-pattern 1004

Example:

For POTS Dial Peers 
Device(config-dial-peer)# destination-pattern .T

Configures a destination pattern. This step is required even though the value is not used for dial-peer matching.

Step 5

no digit-strip for POTS dial peers.

Example:


Device(config-dial-peer)# no digit-strip

Disable unexpected dialed digit strip.

Step 6

exit

Example:


Device(config-dial-peer)# exit

Exits to global configuration mode.

Step 7

(Optional) dial-peer hunt hunt-order-number

Example:


Device(config)# dial-peer hunt 0
(Optional)

Specifies a hunt selection mechanism for dial peers.

  • The default mechanism is random selection.

Step 8

voice class dpg dial-peer-group-id

Example:


Device(config)# voice class dpg 181

Creates a dial-peer group for grouping multiple outbound dial peers and enters voice class configuration mode.

  • You can use the shutdown command to resume regular outbound dial-peer provisioning in dial-peers with this dial-peer group as destination.

Step 9

dial-peer outbound-dial-peer-id [preference preference-order]

Example:


Device(config-class)# dial-peer 123 preference 1

Associates a configured outbound dial peer with this dial-peer group and configures a preference value.

  • Repeat this step for all outbound dial-peers that need to be added to this dial-peer group.

  • If preference is not specified, the order of selection is random or as specified by the dial-peer hunt command.

Step 10

(Optional) description string

Example:


Device(config-class)# description Boston Destination
(Optional)

Provides a description for the dial-peer group.

Step 11

exit

Example:


Device(config-class)# exit

Exits voice class configuration mode and enters global configuration mode.

Step 12

dial-peer voice inbound-dial-peer-id [voip | pots]

Example:

For VoIP dial peer: 

Device(config)# dial-peer voice 789 voip

Example:

For POTS dial peer: 

Device(config)# dial-peer voice 678 pots

Defines a dial peer and enters dial peer configuration mode.

Step 13

destination dpg dial-peer-group-id

Example:

Device(config-dial-peer)# destination dpg 181

Specifies a dial peer group from which an outbound dial peer can be chosen.

Step 14

end

Example:


Device(config-dial-peer)# end

Exits dial peer configuration mode and enters privileged EXEC mode.

Verifying Outbound Dial-Peer Groups as an Inbound Dial-Peer Destination

SUMMARY STEPS

  1. show voice class dpg dial-peer-group-id
  2. show dial-peer voice inbound-dial-peer-id

DETAILED STEPS

Step 1

show voice class dpg dial-peer-group-id

Displays the configuration of an outbound dial-peer group.

Example:

Device# show voice class dpg 200

Voice class dpg: 200     AdminStatus: Up
 Description: Boston Destination
 Total dial-peer entries: 4

 Peer Tag       Pref
 --------       ----
 1001           1
 1002           2
 1004           0
 1003           1
-------------------------------------

Step 2

show dial-peer voice inbound-dial-peer-id

Displays the referencing of destination dial-peer group from an inbound dial peer.

Example:

Device# show dial-peer voice 100 | include destination dpg

        destination dpg tag = 200 status = valid,

Troubleshooting Tips

SUMMARY STEPS

  1. Enter the following:
    • debug voip dialpeer inout
    • debug voip ccapi inout

DETAILED STEPS

Enter the following:

  • debug voip dialpeer inout
  • debug voip ccapi inout

Displays the configuration of an outbound dial-peer group.

Example:


*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/dpMatchCore:
   Dial String=4001, Expanded String=4001, Calling Number=
   Timeout=TRUE, Is Incoming=TRUE, Peer Info Type=DIALPEER_INFO_SPEECH
*Jul 19 10:15:53.310 IST: //-1/xxxxxxxxxxxx/DPM/vepm_match_pattern_map:
   DEPM 1000 use caching dialstring 4001 status 0
*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/MatchNextPeer:

Incoming dial peer is first matched: 


Result=Success(0); Incoming Dial-peer=600 Is Matched
*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/dpMatchPeertype:exit@6602
*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/dpAssociateIncomingPeerCore:
   Result=Success(0) after DP_MATCH_INCOMING_DNIS; Incoming Dial-peer=600
*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/dpMatchSafModulePlugin:
   dialstring=NULL, saf_enabled=0, saf_dndb_lookup=0, dp_result=0
*Jul 19 10:15:53.310 IST: //-1/ED647BD1B0F9/DPM/dpAssociateIncomingPeerSPI:exit@7181
*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchPeersCore:
   Calling Number=, Called Number=4001, Peer Info Type=DIALPEER_INFO_SPEECH

The dial-peer group associated with a dial peer is selected: 


*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchPeersCore:
   Outbound Destination DPG Group Request; Destination DPG=1
*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchDestDPGroup:
   Result=0
*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchPeersCore:
   Result=SUCCESS(0) after DestDPGroup
*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchSafModulePlugin:
   dialstring=4001, saf_enabled=0, saf_dndb_lookup=1, dp_result=0

List of active Dial-peers configured within the DPG, sorted by preference: 


*Jul 19 10:15:53.311 IST: //-1/ED647BD1B0F9/DPM/dpMatchPeersMoreArg:
   Result=SUCCESS(0)
 List of Matched Outgoing Dial-peer(s):
     1: Dial-peer Tag=1004
     2: Dial-peer Tag=1001
     3: Dial-peer Tag=1003 
     4: Dial-peer Tag=1002

Configuration Examples for Outbound Dial Peer Group as an Inbound Dial-Peer Destination 


Device> enable
Device# configure terminal
! Configuring outbound dial peers that are to be grouped.
Device(config)# dial-peer voice 1001 voip
Device(config-dial-peer)# destination-pattern 1001
Device(config-dial-peer)# session protocol sipv2
Device(config-dial-peer)# session target ipv4:10.1.1.1
Device(config-dial-peer)# exit

Device(config)# dial-peer voice 1002 voip
Device(config-dial-peer)# destination-pattern 1002
Device(config-dial-peer)# session protocol sipv2
Device(config-dial-peer)# session target ipv4:10.1.1.2
Device(config-dial-peer)# exit


Device(config)# dial-peer voice 1003 voip
Device(config-dial-peer)# destination-pattern 1003
Device(config-dial-peer)# session protocol sipv2
Device(config-dial-peer)# session target ipv4:10.1.1.3
Device(config-dial-peer)# exit


Device(config)# dial-peer voice 1004 pots
Device(config-dial-peer)# destination-pattern 5...
Device(config-dial-peer)# no digit-strip
Device(config-dial-peer)# direct-inward-dial
Device(config-dial-peer)# port 1/0/0:23
Device(config-dial-peer)# forward-digits all
Device(config-dial-peer)# exit

!Grouping outbound dial peers and configuring preferences if needed.
Device(config)# voice class dpg 200
Device(config-class)# dial-peer 1001 preference 1
Device(config-class)# dial-peer 1002 preference 2
Device(config-class)# dial-peer 1003 preference 3
Device(config-class)# dial-peer 1004 preference 4
Device(config-class)# description Boston Destination
Device(config-class)# exit

!Associating outbound dial peer group with an inbound dial peer group.
Device(config)# dial-peer voice 100 voip
Device(config-dial-peer)# incoming called-number 13411
Device(config-dial-peer)# destination dpg 200
Device(config-dial-peer)# end

!Associating outbound dial peer group with an inbound POTS dial peer group.
Device(config)# dial-peer voice 600 pots
Device(config-dial-peer)# incoming called-number 4T
Device(config-dial-peer)# destination dpg 200
Device(config-dial-peer)# end

Verifying Outbound Dial-Peer Group Configuration 

Device# show voice class dpg 200

Voice class dpg: 200     AdminStatus: Up
 Description: Boston Destination
 Total dial-peer entries: 4

 Peer Tag       Pref
 --------       ----
 1001           1
 1002           2
 1004           0
 1003           1
-------------------------------------

Verifying Inbound Dial-Peer Referencing Outbound Dial-Peer Group 

Device# show dial-peer voice 100 | include destination dpg

        destination dpg tag = 200 status = valid,
Device# show dial-peer voice 600 | include destination dpg

        destination dpg tag = 200 status = valid,