Hello , I want to upgrate my Cisco 7961 Phone to SIP Firmware. I have done a factory reset with 3491672850*#. I have connect the Phone with a crossover cable to my Laptop. On the Laptop I run tftpd32 Version 3.23. I have prepaired a dirctory with all...

Hello,I have a question about SIP-Trunk to a SIP Provider and CCME.Our SIP-Provider uses the TO-Header for matching inbound calls.(INVITE).I have found that cisco uses the field Request-URI for signaling incoming calls.Is there a possibilty to match ...

Hello,I am looking for a solution to solve the following issue.I use CCME with Cisco IP-Phones 7931.I have about 30 Phones.The phones have the numbers 101,102,103,??..When there is an incoming call for e.g. number 102,all other other phones should ge...

Hello,we use two Routers with Site-To-Site VPN.One site with static ip the other site with dynamic ip.Sometimes we get an error-message on the router.The error-message is:%CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has invalid spi for des...

we use a video conference system of Tandberg (H.323-protocol)which is behind Cisco Router 2811.We have a Internet connection with a SDSL line and one fixed IP-Adresse.On using this video conference system a lot of port has been configured on the fire...