Knowledgebase

Configuration Description

ENFORCE THE TRANSPARENT CODEC FOR ISDN UD-64 CALLS:

Incoming ISDN calls will be split into two call-router paths to enforce transparent codec for ISDN unrestricted digital calls.
Note that the VOIP-DATA interface has no route into the call-router, it operates as a one-way interface. However it has a special Voip-Profile linked, which only contains the transparent codec.
The VOIP-DEFAULT interface will be used for incoming voip calls. It uses the default voip profile, which is linked in the voip gateway.
The default profile contains the transparent codec with the lowest priority to ensure that voice calls never uses the transparent codec.

Commande Sequence to copy, edit and paste

#-----------------------------------------------------------------#
#                                                                 #
# SN4552 / 46XX / SN4960 / SN4940 / SN4950 / SN4660 / SN4670      #
# R5.X / R6.X SIP /H323                                           #
#                                                                 #
# ENFORCE THE TRANSPARENT CODEC FOR ISDN UD-64 CALLS              #
#                                                                 #
# Sample configuration of context CS only. Without gateway and IP #
# configuration.                                                  #
#                                                                 #
# After replacing all variables you may copy and paste this       #
# configuration part into your offline configuration file.        #
#                                                                 #
# Incoming ISDN calls will be split into two call-router paths to #
# enforce transparent codec for ISDN unrestricted digital calls.  #
# Note that the VOIP-DATA interface has no route into the         #
# call-router, it operates as a one-way interface. But it has a   #
# special Voip-Profile linked, which only contains the            #
# transparent codec.                                              #
# The VOIP-DEFAULT interface will be used for incoming voip calls.#
# It uses the default voip profile, which is linked in the voip   #
# gateway. The default profile contains the transparent codec     #
# with the lowest priority to ensure that voice calls never uses  #
# the transparent codec.                                          #
#                                                                 #
#                                                                 #
# DATE:   2006-10-04 / Dec. 2011                                  #
# AUTHOR: Markus Zeier; Revision for 5.X, M. Aeberhard            #
#         PATTON-INALP-NETWORKS; CH-3172 NIEDERWANGEN             #
#         WWW.PATTON.COM    WWW.INALP.COM                         #
#                                                                 #
#                                                                 #
#-----------------------------------------------------------------#



profile voip default
  codec 1 g726-32k-cisco rx-length 20 tx-length 20
  codec 2 g711alaw64k rx-length 20 tx-length 20
  codec 3 g711ulaw64k rx-length 20 tx-length 20
  codec 4 transparent rx-length 20 tx-length 20
  codec 5 transparent-cisco rx-length 20 tx-length 20
  fax transmission 1 relay t38-udp
  fax redundancy low-speed 2 high-speed 1
  modem transmission 1 bypass g711alaw64k
  modem bypass-method nse

profile voip PF_VOIP_DATA
  codec 1 transparent rx-length 20 tx-length 20
  codec 2 transparent-cisco rx-length 20 tx-length 20

context cs switch

  routing-table called-e164 RT_CDPN_TO_VOIP
    route .T dest-table RT_ITC_VOIP

  routing-table itc RT_ITC_VOIP
    route unrestricted-digital dest-interface IF_VOIP_DATA_OUT
    route default dest-interface IF_VOIP_DEFAULT

  interface isdn IF_ISDN_S01
    route call dest-table RT_CDPN_TO_VOIP

  interface sip IF_VOIP_DEFAULT
    bind context sip-gateway <sip|h323> <gateway name>
    service default <service name>
    route call dest-interface IF_ISDN_S01

  interface sip IF_VOIP_DATA_OUT
    bind context sip-gateway <sip|h323> <gateway name>
    service default <service name>
    use profile voip PF_VOIP_DATA

context cs switch
  no shutdown