IP Telephony and Phones

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Hi,We have an ISDN PRI E1 line as the primary link. Cisco 2821 router is being used as voice gateway and MCS 7825 as Call Manager Server. Now we want to use an IP trunk line as secondary link. Can anyone give me some idea on the configuration regardi...

Hi,we have cisco 2900 series H323 router with CUCM 7.1.5 in our office. Also we have 5 Analog CO Trunks which are terminated in FXO ports.These 5 CO Trunks are used as  backup incase the primary PRI failes. So that any ip phone can make/receive calls...

someone can help me , my fax machine receive fax from PSTN always lost words,but from intranet is OK, the machine is OK , fax machine ------ VG224 -----SCCP-----CUCM------ROUTER-------PSTN  this is my topology i think the porblem is router , my fax p...

bo liu by Level 4
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  • 3 replies
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Hi,i have customer having Nortel switches 5520 with Nortel IP phones. The customer is having Nortel NSNA used to provide security for the network. For Nortel IP phones the customer is using signatues (ex. Nortel-i2004-A)We are planning to replace Nor...

ichehouri by Level 2
  • 484 Views
  • 3 replies
  • 0 Helpful votes